CVE-2021-47174 (GCVE-0-2021-47174)

Vulnerability from cvelistv5 – Published: 2024-03-25 09:16 – Updated: 2026-05-11 13:49
VLAI
Title
netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version Arturo reported this backtrace: [709732.358791] WARNING: CPU: 3 PID: 456 at arch/x86/kernel/fpu/core.c:128 kernel_fpu_begin_mask+0xae/0xe0 [709732.358793] Modules linked in: binfmt_misc nft_nat nft_chain_nat nf_nat nft_counter nft_ct nf_tables nf_conntrack_netlink nfnetlink 8021q garp stp mrp llc vrf intel_rapl_msr intel_rapl_common skx_edac nfit libnvdimm ipmi_ssif x86_pkg_temp_thermal intel_powerclamp coretemp crc32_pclmul mgag200 ghash_clmulni_intel drm_kms_helper cec aesni_intel drm libaes crypto_simd cryptd glue_helper mei_me dell_smbios iTCO_wdt evdev intel_pmc_bxt iTCO_vendor_support dcdbas pcspkr rapl dell_wmi_descriptor wmi_bmof sg i2c_algo_bit watchdog mei acpi_ipmi ipmi_si button nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipmi_devintf ipmi_msghandler ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 dm_mod raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor sd_mod t10_pi crc_t10dif crct10dif_generic raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod ahci libahci tg3 libata xhci_pci libphy xhci_hcd ptp usbcore crct10dif_pclmul crct10dif_common bnxt_en crc32c_intel scsi_mod [709732.358941] pps_core i2c_i801 lpc_ich i2c_smbus wmi usb_common [709732.358957] CPU: 3 PID: 456 Comm: jbd2/dm-0-8 Not tainted 5.10.0-0.bpo.5-amd64 #1 Debian 5.10.24-1~bpo10+1 [709732.358959] Hardware name: Dell Inc. PowerEdge R440/04JN2K, BIOS 2.9.3 09/23/2020 [709732.358964] RIP: 0010:kernel_fpu_begin_mask+0xae/0xe0 [709732.358969] Code: ae 54 24 04 83 e3 01 75 38 48 8b 44 24 08 65 48 33 04 25 28 00 00 00 75 33 48 83 c4 10 5b c3 65 8a 05 5e 21 5e 76 84 c0 74 92 <0f> 0b eb 8e f0 80 4f 01 40 48 81 c7 00 14 00 00 e8 dd fb ff ff eb [709732.358972] RSP: 0018:ffffbb9700304740 EFLAGS: 00010202 [709732.358976] RAX: 0000000000000001 RBX: 0000000000000003 RCX: 0000000000000001 [709732.358979] RDX: ffffbb9700304970 RSI: ffff922fe1952e00 RDI: 0000000000000003 [709732.358981] RBP: ffffbb9700304970 R08: ffff922fc868a600 R09: ffff922fc711e462 [709732.358984] R10: 000000000000005f R11: ffff922ff0b27180 R12: ffffbb9700304960 [709732.358987] R13: ffffbb9700304b08 R14: ffff922fc664b6c8 R15: ffff922fc664b660 [709732.358990] FS: 0000000000000000(0000) GS:ffff92371fec0000(0000) knlGS:0000000000000000 [709732.358993] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [709732.358996] CR2: 0000557a6655bdd0 CR3: 000000026020a001 CR4: 00000000007706e0 [709732.358999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [709732.359001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [709732.359003] PKRU: 55555554 [709732.359005] Call Trace: [709732.359009] <IRQ> [709732.359035] nft_pipapo_avx2_lookup+0x4c/0x1cba [nf_tables] [709732.359046] ? sched_clock+0x5/0x10 [709732.359054] ? sched_clock_cpu+0xc/0xb0 [709732.359061] ? record_times+0x16/0x80 [709732.359068] ? plist_add+0xc1/0x100 [709732.359073] ? psi_group_change+0x47/0x230 [709732.359079] ? skb_clone+0x4d/0xb0 [709732.359085] ? enqueue_task_rt+0x22b/0x310 [709732.359098] ? bnxt_start_xmit+0x1e8/0xaf0 [bnxt_en] [709732.359102] ? packet_rcv+0x40/0x4a0 [709732.359121] nft_lookup_eval+0x59/0x160 [nf_tables] [709732.359133] nft_do_chain+0x350/0x500 [nf_tables] [709732.359152] ? nft_lookup_eval+0x59/0x160 [nf_tables] [709732.359163] ? nft_do_chain+0x364/0x500 [nf_tables] [709732.359172] ? fib4_rule_action+0x6d/0x80 [709732.359178] ? fib_rules_lookup+0x107/0x250 [709732.359184] nft_nat_do_chain+0x8a/0xf2 [nft_chain_nat] [709732.359193] nf_nat_inet_fn+0xea/0x210 [nf_nat] [709732.359202] nf_nat_ipv4_out+0x14/0xa0 [nf_nat] [709732.359207] nf_hook_slow+0x44/0xc0 [709732.359214] ip_output+0xd2/0x100 [709732.359221] ? __ip_finish_output+0x210/0x210 [709732.359226] ip_forward+0x37d/0x4a0 [709732.359232] ? ip4_key_hashfn+0xb0/0xb0 [709732.359238] ip_subli ---truncated---
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-01 19:42 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7400b063969bdca4a06cd97f1294d765c8eecbe1 , < b1f45a26bd322525c14edd9504f6d46dfad679a4 (git)
Affected: 7400b063969bdca4a06cd97f1294d765c8eecbe1 , < 727a2b4fc951ee69847d4904d98961856ea9fbe6 (git)
Affected: 7400b063969bdca4a06cd97f1294d765c8eecbe1 , < f0b3d338064e1fe7531f0d2977e35f3b334abfb4 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.42 , ≤ 5.10.* (semver)
Unaffected: 5.12.9 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47174",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-01T19:42:11.415167Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:15:26.308Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.988Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/b1f45a26bd322525c14edd9504f6d46dfad679a4"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/727a2b4fc951ee69847d4904d98961856ea9fbe6"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/f0b3d338064e1fe7531f0d2977e35f3b334abfb4"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nft_set_pipapo.c",
            "net/netfilter/nft_set_pipapo.h",
            "net/netfilter/nft_set_pipapo_avx2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b1f45a26bd322525c14edd9504f6d46dfad679a4",
              "status": "affected",
              "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
              "versionType": "git"
            },
            {
              "lessThan": "727a2b4fc951ee69847d4904d98961856ea9fbe6",
              "status": "affected",
              "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
              "versionType": "git"
            },
            {
              "lessThan": "f0b3d338064e1fe7531f0d2977e35f3b334abfb4",
              "status": "affected",
              "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nft_set_pipapo.c",
            "net/netfilter/nft_set_pipapo.h",
            "net/netfilter/nft_set_pipapo_avx2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.42",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.9",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version\n\nArturo reported this backtrace:\n\n[709732.358791] WARNING: CPU: 3 PID: 456 at arch/x86/kernel/fpu/core.c:128 kernel_fpu_begin_mask+0xae/0xe0\n[709732.358793] Modules linked in: binfmt_misc nft_nat nft_chain_nat nf_nat nft_counter nft_ct nf_tables nf_conntrack_netlink nfnetlink 8021q garp stp mrp llc vrf intel_rapl_msr intel_rapl_common skx_edac nfit libnvdimm ipmi_ssif x86_pkg_temp_thermal intel_powerclamp coretemp crc32_pclmul mgag200 ghash_clmulni_intel drm_kms_helper cec aesni_intel drm libaes crypto_simd cryptd glue_helper mei_me dell_smbios iTCO_wdt evdev intel_pmc_bxt iTCO_vendor_support dcdbas pcspkr rapl dell_wmi_descriptor wmi_bmof sg i2c_algo_bit watchdog mei acpi_ipmi ipmi_si button nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipmi_devintf ipmi_msghandler ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 dm_mod raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor sd_mod t10_pi crc_t10dif crct10dif_generic raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod ahci libahci tg3 libata xhci_pci libphy xhci_hcd ptp usbcore crct10dif_pclmul crct10dif_common bnxt_en crc32c_intel scsi_mod\n[709732.358941]  pps_core i2c_i801 lpc_ich i2c_smbus wmi usb_common\n[709732.358957] CPU: 3 PID: 456 Comm: jbd2/dm-0-8 Not tainted 5.10.0-0.bpo.5-amd64 #1 Debian 5.10.24-1~bpo10+1\n[709732.358959] Hardware name: Dell Inc. PowerEdge R440/04JN2K, BIOS 2.9.3 09/23/2020\n[709732.358964] RIP: 0010:kernel_fpu_begin_mask+0xae/0xe0\n[709732.358969] Code: ae 54 24 04 83 e3 01 75 38 48 8b 44 24 08 65 48 33 04 25 28 00 00 00 75 33 48 83 c4 10 5b c3 65 8a 05 5e 21 5e 76 84 c0 74 92 \u003c0f\u003e 0b eb 8e f0 80 4f 01 40 48 81 c7 00 14 00 00 e8 dd fb ff ff eb\n[709732.358972] RSP: 0018:ffffbb9700304740 EFLAGS: 00010202\n[709732.358976] RAX: 0000000000000001 RBX: 0000000000000003 RCX: 0000000000000001\n[709732.358979] RDX: ffffbb9700304970 RSI: ffff922fe1952e00 RDI: 0000000000000003\n[709732.358981] RBP: ffffbb9700304970 R08: ffff922fc868a600 R09: ffff922fc711e462\n[709732.358984] R10: 000000000000005f R11: ffff922ff0b27180 R12: ffffbb9700304960\n[709732.358987] R13: ffffbb9700304b08 R14: ffff922fc664b6c8 R15: ffff922fc664b660\n[709732.358990] FS:  0000000000000000(0000) GS:ffff92371fec0000(0000) knlGS:0000000000000000\n[709732.358993] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[709732.358996] CR2: 0000557a6655bdd0 CR3: 000000026020a001 CR4: 00000000007706e0\n[709732.358999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[709732.359001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[709732.359003] PKRU: 55555554\n[709732.359005] Call Trace:\n[709732.359009]  \u003cIRQ\u003e\n[709732.359035]  nft_pipapo_avx2_lookup+0x4c/0x1cba [nf_tables]\n[709732.359046]  ? sched_clock+0x5/0x10\n[709732.359054]  ? sched_clock_cpu+0xc/0xb0\n[709732.359061]  ? record_times+0x16/0x80\n[709732.359068]  ? plist_add+0xc1/0x100\n[709732.359073]  ? psi_group_change+0x47/0x230\n[709732.359079]  ? skb_clone+0x4d/0xb0\n[709732.359085]  ? enqueue_task_rt+0x22b/0x310\n[709732.359098]  ? bnxt_start_xmit+0x1e8/0xaf0 [bnxt_en]\n[709732.359102]  ? packet_rcv+0x40/0x4a0\n[709732.359121]  nft_lookup_eval+0x59/0x160 [nf_tables]\n[709732.359133]  nft_do_chain+0x350/0x500 [nf_tables]\n[709732.359152]  ? nft_lookup_eval+0x59/0x160 [nf_tables]\n[709732.359163]  ? nft_do_chain+0x364/0x500 [nf_tables]\n[709732.359172]  ? fib4_rule_action+0x6d/0x80\n[709732.359178]  ? fib_rules_lookup+0x107/0x250\n[709732.359184]  nft_nat_do_chain+0x8a/0xf2 [nft_chain_nat]\n[709732.359193]  nf_nat_inet_fn+0xea/0x210 [nf_nat]\n[709732.359202]  nf_nat_ipv4_out+0x14/0xa0 [nf_nat]\n[709732.359207]  nf_hook_slow+0x44/0xc0\n[709732.359214]  ip_output+0xd2/0x100\n[709732.359221]  ? __ip_finish_output+0x210/0x210\n[709732.359226]  ip_forward+0x37d/0x4a0\n[709732.359232]  ? ip4_key_hashfn+0xb0/0xb0\n[709732.359238]  ip_subli\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T13:49:24.572Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b1f45a26bd322525c14edd9504f6d46dfad679a4"
        },
        {
          "url": "https://git.kernel.org/stable/c/727a2b4fc951ee69847d4904d98961856ea9fbe6"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0b3d338064e1fe7531f0d2977e35f3b334abfb4"
        }
      ],
      "title": "netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47174",
    "datePublished": "2024-03-25T09:16:25.273Z",
    "dateReserved": "2024-03-25T09:12:14.111Z",
    "dateUpdated": "2026-05-11T13:49:24.572Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-47174",
      "date": "2026-09-24",
      "epss": "0.00232",
      "percentile": "0.12522"
    },
    "fkie_nvd": {
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version\n\nArturo reported this backtrace:\n\n[709732.358791] WARNING: CPU: 3 PID: 456 at arch/x86/kernel/fpu/core.c:128 kernel_fpu_begin_mask+0xae/0xe0\n[709732.358793] Modules linked in: binfmt_misc nft_nat nft_chain_nat nf_nat nft_counter nft_ct nf_tables nf_conntrack_netlink nfnetlink 8021q garp stp mrp llc vrf intel_rapl_msr intel_rapl_common skx_edac nfit libnvdimm ipmi_ssif x86_pkg_temp_thermal intel_powerclamp coretemp crc32_pclmul mgag200 ghash_clmulni_intel drm_kms_helper cec aesni_intel drm libaes crypto_simd cryptd glue_helper mei_me dell_smbios iTCO_wdt evdev intel_pmc_bxt iTCO_vendor_support dcdbas pcspkr rapl dell_wmi_descriptor wmi_bmof sg i2c_algo_bit watchdog mei acpi_ipmi ipmi_si button nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipmi_devintf ipmi_msghandler ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 dm_mod raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor sd_mod t10_pi crc_t10dif crct10dif_generic raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod ahci libahci tg3 libata xhci_pci libphy xhci_hcd ptp usbcore crct10dif_pclmul crct10dif_common bnxt_en crc32c_intel scsi_mod\n[709732.358941]  pps_core i2c_i801 lpc_ich i2c_smbus wmi usb_common\n[709732.358957] CPU: 3 PID: 456 Comm: jbd2/dm-0-8 Not tainted 5.10.0-0.bpo.5-amd64 #1 Debian 5.10.24-1~bpo10+1\n[709732.358959] Hardware name: Dell Inc. PowerEdge R440/04JN2K, BIOS 2.9.3 09/23/2020\n[709732.358964] RIP: 0010:kernel_fpu_begin_mask+0xae/0xe0\n[709732.358969] Code: ae 54 24 04 83 e3 01 75 38 48 8b 44 24 08 65 48 33 04 25 28 00 00 00 75 33 48 83 c4 10 5b c3 65 8a 05 5e 21 5e 76 84 c0 74 92 \u003c0f\u003e 0b eb 8e f0 80 4f 01 40 48 81 c7 00 14 00 00 e8 dd fb ff ff eb\n[709732.358972] RSP: 0018:ffffbb9700304740 EFLAGS: 00010202\n[709732.358976] RAX: 0000000000000001 RBX: 0000000000000003 RCX: 0000000000000001\n[709732.358979] RDX: ffffbb9700304970 RSI: ffff922fe1952e00 RDI: 0000000000000003\n[709732.358981] RBP: ffffbb9700304970 R08: ffff922fc868a600 R09: ffff922fc711e462\n[709732.358984] R10: 000000000000005f R11: ffff922ff0b27180 R12: ffffbb9700304960\n[709732.358987] R13: ffffbb9700304b08 R14: ffff922fc664b6c8 R15: ffff922fc664b660\n[709732.358990] FS:  0000000000000000(0000) GS:ffff92371fec0000(0000) knlGS:0000000000000000\n[709732.358993] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[709732.358996] CR2: 0000557a6655bdd0 CR3: 000000026020a001 CR4: 00000000007706e0\n[709732.358999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[709732.359001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[709732.359003] PKRU: 55555554\n[709732.359005] Call Trace:\n[709732.359009]  \u003cIRQ\u003e\n[709732.359035]  nft_pipapo_avx2_lookup+0x4c/0x1cba [nf_tables]\n[709732.359046]  ? sched_clock+0x5/0x10\n[709732.359054]  ? sched_clock_cpu+0xc/0xb0\n[709732.359061]  ? record_times+0x16/0x80\n[709732.359068]  ? plist_add+0xc1/0x100\n[709732.359073]  ? psi_group_change+0x47/0x230\n[709732.359079]  ? skb_clone+0x4d/0xb0\n[709732.359085]  ? enqueue_task_rt+0x22b/0x310\n[709732.359098]  ? bnxt_start_xmit+0x1e8/0xaf0 [bnxt_en]\n[709732.359102]  ? packet_rcv+0x40/0x4a0\n[709732.359121]  nft_lookup_eval+0x59/0x160 [nf_tables]\n[709732.359133]  nft_do_chain+0x350/0x500 [nf_tables]\n[709732.359152]  ? nft_lookup_eval+0x59/0x160 [nf_tables]\n[709732.359163]  ? nft_do_chain+0x364/0x500 [nf_tables]\n[709732.359172]  ? fib4_rule_action+0x6d/0x80\n[709732.359178]  ? fib_rules_lookup+0x107/0x250\n[709732.359184]  nft_nat_do_chain+0x8a/0xf2 [nft_chain_nat]\n[709732.359193]  nf_nat_inet_fn+0xea/0x210 [nf_nat]\n[709732.359202]  nf_nat_ipv4_out+0x14/0xa0 [nf_nat]\n[709732.359207]  nf_hook_slow+0x44/0xc0\n[709732.359214]  ip_output+0xd2/0x100\n[709732.359221]  ? __ip_finish_output+0x210/0x210\n[709732.359226]  ip_forward+0x37d/0x4a0\n[709732.359232]  ? ip4_key_hashfn+0xb0/0xb0\n[709732.359238]  ip_subli\n---truncated---"
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: nft_set_pipapo_avx2: agregar verificaci\u00f3n irq_fpu_usable(), respaldo a una versi\u00f3n que no sea AVX2 Arturo inform\u00f3 este seguimiento: [709732.358791] ADVERTENCIA: CPU: 3 PID: 456 en arch/x86/kernel /fpu/core.c:128 kernel_fpu_begin_mask+0xae/0xe0 [709732.358793] M\u00f3dulos vinculados en: binfmt_misc nft_nat nft_chain_nat nf_nat nft_counter nft_ct nf_tables nf_conntrack_netlink nfnetlink 8021q garp stp mrp ll c vrf intel_rapl_msr intel_rapl_common skx_edac nfit libnvdimm ipmi_ssif x86_pkg_temp_thermal intel_powerclamp coretemp crc32_pclmul mgag200 ghash_clmulni_intel drm_kms_helper cec aesni_intel drm libaes crypto_simd cryptd pegamento_helper mei_me dell_smbios iTCO_wdt evdev intel_pmc_bxt iTCO_vendor_support dcdbas pcspkr rapl dell_wmi_descriptor wmi_bmof sg i2c_algo_bit perro guardi\u00e1n mei acpi_ipmi ipmi_si bot\u00f3n nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipmi_devintf ipmi_msghandler ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 dm_mod raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor sd_mod t10_pi crc_t10dif crct10dif_generic raid6_pq libcrc32c crc32c_generic raid1 raid0 multiruta lineal md_mod ahci libahci tg3 libata xhci_pci libphy xhci_hcd ptp usbcore crct10dif_pclmul crct10dif_common bnxt_en crc32c_intel scsi_mod [709732.358941] pps_core i2c_i801 lpc_ich i2c_ smbus wmi usb_common [709732.358957] CPU: 3 PID: 456 Comunicaciones: jbd2/dm-0-8 No contaminado 5.10 .0-0.bpo.5-amd64 #1 Debian 5.10.24-1~bpo10+1 [709732.358959] Nombre del hardware: Dell Inc. PowerEdge R440/04JN2K, BIOS 2.9.3 23/09/2020 [709732.358964] RIP: 0010:kernel_fpu_begin_mask+0xae/0xe0 [709732.358969] C\u00f3digo: ae 54 24 04 83 e3 01 75 38 48 8b 44 24 08 65 48 33 04 25 28 00 00 00 75 33 48 83 c4 10 5b c3 65 8a 05 5e 21 5e 76 84 c0 74 92 \u0026lt;0f\u0026gt; 0b eb 8e f0 80 4f 01 40 48 81 c7 00 14 00 00 e8 dd fb ff ff eb [709732.358972] RSP: 0018:ffffbb9700304740 EFLAGS: 00010202 [709 732.358976] RAX: 00000000000000001 RBX: 0000000000000003 RCX: 0000000000000001 [709732.358979] RDX: ffffbb9700304970 RSI: ffff922fe1952e00 RDI: 00000000000000003 [709732.358981] RBP: ffffbb9700304970 R08: ffff922fc868a600 R09: ffff922fc711e462 [709732.358984] R10: 000000000000005f R11: ffff922ff0b27180 R12: ffffbb9700304960 [709732.358987] R13: ffffbb9700304b08 R14: ffff922fc664b6c8 R15: ffff922fc664b660 [ 709732.358990] FS: 0000000000000000(0000) GS:ffff92371fec0000(0000) knlGS:0000000000000000 [709732.358993] CS: 0010 DS: 0000 ES: 0000 CR0: 00 00000080050033 [709732.358996] CR2: 0000557a6655bdd0 CR3: 000000026020a001 CR4: 00000000007706e0 [709732.358999] DR0: 00000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [709732.359001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [709732.3590 03] PKRU: 55555554 [709732.359005] Seguimiento de llamadas: [709732.359009]  [709732.359035] nft_pipapo_avx2_lookup+0x4c/0x1cba [nf_tables] [709732.359046] ? sched_clock+0x5/0x10 [709732.359054] ? sched_clock_cpu+0xc/0xb0 [709732.359061] ? record_times+0x16/0x80 [709732.359068] ? plist_add+0xc1/0x100 [709732.359073] ? psi_group_change+0x47/0x230 [709732.359079] ? skb_clone+0x4d/0xb0 [709732.359085] ? enqueue_task_rt+0x22b/0x310 [709732.359098] ? bnxt_start_xmit+0x1e8/0xaf0 [bnxt_es] [709732.359102] ? paquete_rcv+0x40/0x4a0 [709732.359121] nft_lookup_eval+0x59/0x160 [nf_tables] [709732.359133] nft_do_chain+0x350/0x500 [nf_tables] [709732.359152] ? nft_lookup_eval+0x59/0x160 [nf_tables] [709732.359163] ? nft_do_chain+0x364/0x500 [nf_tables] [709732.359172]? fib4_rule_action+0x6d/0x80 [709732.359178] ? fib_rules_lookup+0x107/0x250 [709732.359184] nft_nat_do_chain+0x8a/0xf2 [nft_chain_nat] [709732.359193] nf_nat_inet_fn+0xea/0x210 [nf_nat] [709732.359202 ] nf_nat_ipv4_out+0x14/0xa0 [nf_nat] [709732.359207] nf_hook_slow+0x44/0xc0 [709732.359214] salida_ip +0xd2/0x100 [709732.359221] ? __ip_finish_output+0x210/0x210 [709732.359226] ip_forward+0x37d/0x4a0 [709732.359232] ? ip4_key_hashfn+0xb0/0xb0 [709732.359238] ip_subli ---truncado---"
        }
      ],
      "id": "CVE-2021-47174",
      "lastModified": "2024-11-21T06:35:33.423",
      "published": "2024-03-25T10:15:09.060",
      "references": [
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/727a2b4fc951ee69847d4904d98961856ea9fbe6"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/b1f45a26bd322525c14edd9504f6d46dfad679a4"
        },
        {
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "url": "https://git.kernel.org/stable/c/f0b3d338064e1fe7531f0d2977e35f3b334abfb4"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/727a2b4fc951ee69847d4904d98961856ea9fbe6"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/b1f45a26bd322525c14edd9504f6d46dfad679a4"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://git.kernel.org/stable/c/f0b3d338064e1fe7531f0d2977e35f3b334abfb4"
        }
      ],
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "net/netfilter/nft_set_pipapo.c",
                  "net/netfilter/nft_set_pipapo.h",
                  "net/netfilter/nft_set_pipapo_avx2.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "b1f45a26bd322525c14edd9504f6d46dfad679a4",
                    "status": "affected",
                    "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "727a2b4fc951ee69847d4904d98961856ea9fbe6",
                    "status": "affected",
                    "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f0b3d338064e1fe7531f0d2977e35f3b334abfb4",
                    "status": "affected",
                    "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "net/netfilter/nft_set_pipapo.c",
                  "net/netfilter/nft_set_pipapo.h",
                  "net/netfilter/nft_set_pipapo_avx2.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.7"
                  },
                  {
                    "lessThan": "5.7",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.42",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.12.*",
                    "status": "unaffected",
                    "version": "5.12.9",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "5.13",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "80071323-2D44-440B-A37F-B00E96F0C8C1",
                    "versionEndExcluding": "5.10.42",
                    "versionStartIncluding": "5.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2C8A1D02-81A7-44E5-ACFD-CC6A6694F930",
                    "versionEndExcluding": "5.12.9",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "DA610E30-717C-4700-9F77-A3C9244F3BFD",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version\n\nArturo reported this backtrace:\n\n[709732.358791] WARNING: CPU: 3 PID: 456 at arch/x86/kernel/fpu/core.c:128 kernel_fpu_begin_mask+0xae/0xe0\n[709732.358793] Modules linked in: binfmt_misc nft_nat nft_chain_nat nf_nat nft_counter nft_ct nf_tables nf_conntrack_netlink nfnetlink 8021q garp stp mrp llc vrf intel_rapl_msr intel_rapl_common skx_edac nfit libnvdimm ipmi_ssif x86_pkg_temp_thermal intel_powerclamp coretemp crc32_pclmul mgag200 ghash_clmulni_intel drm_kms_helper cec aesni_intel drm libaes crypto_simd cryptd glue_helper mei_me dell_smbios iTCO_wdt evdev intel_pmc_bxt iTCO_vendor_support dcdbas pcspkr rapl dell_wmi_descriptor wmi_bmof sg i2c_algo_bit watchdog mei acpi_ipmi ipmi_si button nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipmi_devintf ipmi_msghandler ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 dm_mod raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor sd_mod t10_pi crc_t10dif crct10dif_generic raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod ahci libahci tg3 libata xhci_pci libphy xhci_hcd ptp usbcore crct10dif_pclmul crct10dif_common bnxt_en crc32c_intel scsi_mod\n[709732.358941]  pps_core i2c_i801 lpc_ich i2c_smbus wmi usb_common\n[709732.358957] CPU: 3 PID: 456 Comm: jbd2/dm-0-8 Not tainted 5.10.0-0.bpo.5-amd64 #1 Debian 5.10.24-1~bpo10+1\n[709732.358959] Hardware name: Dell Inc. PowerEdge R440/04JN2K, BIOS 2.9.3 09/23/2020\n[709732.358964] RIP: 0010:kernel_fpu_begin_mask+0xae/0xe0\n[709732.358969] Code: ae 54 24 04 83 e3 01 75 38 48 8b 44 24 08 65 48 33 04 25 28 00 00 00 75 33 48 83 c4 10 5b c3 65 8a 05 5e 21 5e 76 84 c0 74 92 \u003c0f\u003e 0b eb 8e f0 80 4f 01 40 48 81 c7 00 14 00 00 e8 dd fb ff ff eb\n[709732.358972] RSP: 0018:ffffbb9700304740 EFLAGS: 00010202\n[709732.358976] RAX: 0000000000000001 RBX: 0000000000000003 RCX: 0000000000000001\n[709732.358979] RDX: ffffbb9700304970 RSI: ffff922fe1952e00 RDI: 0000000000000003\n[709732.358981] RBP: ffffbb9700304970 R08: ffff922fc868a600 R09: ffff922fc711e462\n[709732.358984] R10: 000000000000005f R11: ffff922ff0b27180 R12: ffffbb9700304960\n[709732.358987] R13: ffffbb9700304b08 R14: ffff922fc664b6c8 R15: ffff922fc664b660\n[709732.358990] FS:  0000000000000000(0000) GS:ffff92371fec0000(0000) knlGS:0000000000000000\n[709732.358993] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[709732.358996] CR2: 0000557a6655bdd0 CR3: 000000026020a001 CR4: 00000000007706e0\n[709732.358999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[709732.359001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[709732.359003] PKRU: 55555554\n[709732.359005] Call Trace:\n[709732.359009]  \u003cIRQ\u003e\n[709732.359035]  nft_pipapo_avx2_lookup+0x4c/0x1cba [nf_tables]\n[709732.359046]  ? sched_clock+0x5/0x10\n[709732.359054]  ? sched_clock_cpu+0xc/0xb0\n[709732.359061]  ? record_times+0x16/0x80\n[709732.359068]  ? plist_add+0xc1/0x100\n[709732.359073]  ? psi_group_change+0x47/0x230\n[709732.359079]  ? skb_clone+0x4d/0xb0\n[709732.359085]  ? enqueue_task_rt+0x22b/0x310\n[709732.359098]  ? bnxt_start_xmit+0x1e8/0xaf0 [bnxt_en]\n[709732.359102]  ? packet_rcv+0x40/0x4a0\n[709732.359121]  nft_lookup_eval+0x59/0x160 [nf_tables]\n[709732.359133]  nft_do_chain+0x350/0x500 [nf_tables]\n[709732.359152]  ? nft_lookup_eval+0x59/0x160 [nf_tables]\n[709732.359163]  ? nft_do_chain+0x364/0x500 [nf_tables]\n[709732.359172]  ? fib4_rule_action+0x6d/0x80\n[709732.359178]  ? fib_rules_lookup+0x107/0x250\n[709732.359184]  nft_nat_do_chain+0x8a/0xf2 [nft_chain_nat]\n[709732.359193]  nf_nat_inet_fn+0xea/0x210 [nf_nat]\n[709732.359202]  nf_nat_ipv4_out+0x14/0xa0 [nf_nat]\n[709732.359207]  nf_hook_slow+0x44/0xc0\n[709732.359214]  ip_output+0xd2/0x100\n[709732.359221]  ? __ip_finish_output+0x210/0x210\n[709732.359226]  ip_forward+0x37d/0x4a0\n[709732.359232]  ? ip4_key_hashfn+0xb0/0xb0\n[709732.359238]  ip_subli\n---truncated---"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: nft_set_pipapo_avx2: agregar verificaci\u00f3n irq_fpu_usable(), respaldo a una versi\u00f3n que no sea AVX2 Arturo inform\u00f3 este seguimiento: [709732.358791] ADVERTENCIA: CPU: 3 PID: 456 en arch/x86/kernel /fpu/core.c:128 kernel_fpu_begin_mask+0xae/0xe0 [709732.358793] M\u00f3dulos vinculados en: binfmt_misc nft_nat nft_chain_nat nf_nat nft_counter nft_ct nf_tables nf_conntrack_netlink nfnetlink 8021q garp stp mrp ll c vrf intel_rapl_msr intel_rapl_common skx_edac nfit libnvdimm ipmi_ssif x86_pkg_temp_thermal intel_powerclamp coretemp crc32_pclmul mgag200 ghash_clmulni_intel drm_kms_helper cec aesni_intel drm libaes crypto_simd cryptd pegamento_helper mei_me dell_smbios iTCO_wdt evdev intel_pmc_bxt iTCO_vendor_support dcdbas pcspkr rapl dell_wmi_descriptor wmi_bmof sg i2c_algo_bit perro guardi\u00e1n mei acpi_ipmi ipmi_si bot\u00f3n nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipmi_devintf ipmi_msghandler ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 dm_mod raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor sd_mod t10_pi crc_t10dif crct10dif_generic raid6_pq libcrc32c crc32c_generic raid1 raid0 multiruta lineal md_mod ahci libahci tg3 libata xhci_pci libphy xhci_hcd ptp usbcore crct10dif_pclmul crct10dif_common bnxt_en crc32c_intel scsi_mod [709732.358941] pps_core i2c_i801 lpc_ich i2c_ smbus wmi usb_common [709732.358957] CPU: 3 PID: 456 Comunicaciones: jbd2/dm-0-8 No contaminado 5.10 .0-0.bpo.5-amd64 #1 Debian 5.10.24-1~bpo10+1 [709732.358959] Nombre del hardware: Dell Inc. PowerEdge R440/04JN2K, BIOS 2.9.3 23/09/2020 [709732.358964] RIP: 0010:kernel_fpu_begin_mask+0xae/0xe0 [709732.358969] C\u00f3digo: ae 54 24 04 83 e3 01 75 38 48 8b 44 24 08 65 48 33 04 25 28 00 00 00 75 33 48 83 c4 10 5b c3 65 8a 05 5e 21 5e 76 84 c0 74 92 \u0026lt;0f\u0026gt; 0b eb 8e f0 80 4f 01 40 48 81 c7 00 14 00 00 e8 dd fb ff ff eb [709732.358972] RSP: 0018:ffffbb9700304740 EFLAGS: 00010202 [709 732.358976] RAX: 00000000000000001 RBX: 0000000000000003 RCX: 0000000000000001 [709732.358979] RDX: ffffbb9700304970 RSI: ffff922fe1952e00 RDI: 00000000000000003 [709732.358981] RBP: ffffbb9700304970 R08: ffff922fc868a600 R09: ffff922fc711e462 [709732.358984] R10: 000000000000005f R11: ffff922ff0b27180 R12: ffffbb9700304960 [709732.358987] R13: ffffbb9700304b08 R14: ffff922fc664b6c8 R15: ffff922fc664b660 [ 709732.358990] FS: 0000000000000000(0000) GS:ffff92371fec0000(0000) knlGS:0000000000000000 [709732.358993] CS: 0010 DS: 0000 ES: 0000 CR0: 00 00000080050033 [709732.358996] CR2: 0000557a6655bdd0 CR3: 000000026020a001 CR4: 00000000007706e0 [709732.358999] DR0: 00000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [709732.359001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [709732.3590 03] PKRU: 55555554 [709732.359005] Seguimiento de llamadas: [709732.359009]  [709732.359035] nft_pipapo_avx2_lookup+0x4c/0x1cba [nf_tables] [709732.359046] ? sched_clock+0x5/0x10 [709732.359054] ? sched_clock_cpu+0xc/0xb0 [709732.359061] ? record_times+0x16/0x80 [709732.359068] ? plist_add+0xc1/0x100 [709732.359073] ? psi_group_change+0x47/0x230 [709732.359079] ? skb_clone+0x4d/0xb0 [709732.359085] ? enqueue_task_rt+0x22b/0x310 [709732.359098] ? bnxt_start_xmit+0x1e8/0xaf0 [bnxt_es] [709732.359102] ? paquete_rcv+0x40/0x4a0 [709732.359121] nft_lookup_eval+0x59/0x160 [nf_tables] [709732.359133] nft_do_chain+0x350/0x500 [nf_tables] [709732.359152] ? nft_lookup_eval+0x59/0x160 [nf_tables] [709732.359163] ? nft_do_chain+0x364/0x500 [nf_tables] [709732.359172]? fib4_rule_action+0x6d/0x80 [709732.359178] ? fib_rules_lookup+0x107/0x250 [709732.359184] nft_nat_do_chain+0x8a/0xf2 [nft_chain_nat] [709732.359193] nf_nat_inet_fn+0xea/0x210 [nf_nat] [709732.359202 ] nf_nat_ipv4_out+0x14/0xa0 [nf_nat] [709732.359207] nf_hook_slow+0x44/0xc0 [709732.359214] salida_ip +0xd2/0x100 [709732.359221] ? __ip_finish_output+0x210/0x210 [709732.359226] ip_forward+0x37d/0x4a0 [709732.359232] ? ip4_key_hashfn+0xb0/0xb0 [709732.359238] ip_subli ---truncado---"
          }
        ],
        "id": "CVE-2021-47174",
        "lastModified": "2026-06-17T04:16:50.033",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2021-47174",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-01T19:42:11.415167Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-03-25T10:15:09.060",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/727a2b4fc951ee69847d4904d98961856ea9fbe6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b1f45a26bd322525c14edd9504f6d46dfad679a4"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f0b3d338064e1fe7531f0d2977e35f3b334abfb4"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/727a2b4fc951ee69847d4904d98961856ea9fbe6"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b1f45a26bd322525c14edd9504f6d46dfad679a4"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f0b3d338064e1fe7531f0d2977e35f3b334abfb4"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T13:42:54+00:00",
      "cve": "CVE-2021-47174",
      "id": "CVE-2021-47174",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "170",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47174.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-04T00:43:37Z",
      "cve": "CVE-2021-47174",
      "id": "CVE-2021-47174",
      "initial_release_date": "2024-03-27T04:25:57Z",
      "product_status:known_affected": "388",
      "product_status:known_not_affected": "320",
      "product_status:recommended": "91",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47174",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47174.json",
      "version": "38"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-04T05:24:39.988Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/b1f45a26bd322525c14edd9504f6d46dfad679a4"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/727a2b4fc951ee69847d4904d98961856ea9fbe6"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://git.kernel.org/stable/c/f0b3d338064e1fe7531f0d2977e35f3b334abfb4"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2021-47174",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-04-01T19:42:11.415167Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-05-23T19:01:20.850Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/netfilter/nft_set_pipapo.c",
                "net/netfilter/nft_set_pipapo.h",
                "net/netfilter/nft_set_pipapo_avx2.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "b1f45a26bd322525c14edd9504f6d46dfad679a4",
                  "status": "affected",
                  "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
                  "versionType": "git"
                },
                {
                  "lessThan": "727a2b4fc951ee69847d4904d98961856ea9fbe6",
                  "status": "affected",
                  "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
                  "versionType": "git"
                },
                {
                  "lessThan": "f0b3d338064e1fe7531f0d2977e35f3b334abfb4",
                  "status": "affected",
                  "version": "7400b063969bdca4a06cd97f1294d765c8eecbe1",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/netfilter/nft_set_pipapo.c",
                "net/netfilter/nft_set_pipapo.h",
                "net/netfilter/nft_set_pipapo_avx2.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.7"
                },
                {
                  "lessThan": "5.7",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.42",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.12.*",
                  "status": "unaffected",
                  "version": "5.12.9",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.42",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.12.9",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.13",
                      "versionStartIncluding": "5.7",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version\n\nArturo reported this backtrace:\n\n[709732.358791] WARNING: CPU: 3 PID: 456 at arch/x86/kernel/fpu/core.c:128 kernel_fpu_begin_mask+0xae/0xe0\n[709732.358793] Modules linked in: binfmt_misc nft_nat nft_chain_nat nf_nat nft_counter nft_ct nf_tables nf_conntrack_netlink nfnetlink 8021q garp stp mrp llc vrf intel_rapl_msr intel_rapl_common skx_edac nfit libnvdimm ipmi_ssif x86_pkg_temp_thermal intel_powerclamp coretemp crc32_pclmul mgag200 ghash_clmulni_intel drm_kms_helper cec aesni_intel drm libaes crypto_simd cryptd glue_helper mei_me dell_smbios iTCO_wdt evdev intel_pmc_bxt iTCO_vendor_support dcdbas pcspkr rapl dell_wmi_descriptor wmi_bmof sg i2c_algo_bit watchdog mei acpi_ipmi ipmi_si button nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipmi_devintf ipmi_msghandler ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 dm_mod raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor sd_mod t10_pi crc_t10dif crct10dif_generic raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod ahci libahci tg3 libata xhci_pci libphy xhci_hcd ptp usbcore crct10dif_pclmul crct10dif_common bnxt_en crc32c_intel scsi_mod\n[709732.358941]  pps_core i2c_i801 lpc_ich i2c_smbus wmi usb_common\n[709732.358957] CPU: 3 PID: 456 Comm: jbd2/dm-0-8 Not tainted 5.10.0-0.bpo.5-amd64 #1 Debian 5.10.24-1~bpo10+1\n[709732.358959] Hardware name: Dell Inc. PowerEdge R440/04JN2K, BIOS 2.9.3 09/23/2020\n[709732.358964] RIP: 0010:kernel_fpu_begin_mask+0xae/0xe0\n[709732.358969] Code: ae 54 24 04 83 e3 01 75 38 48 8b 44 24 08 65 48 33 04 25 28 00 00 00 75 33 48 83 c4 10 5b c3 65 8a 05 5e 21 5e 76 84 c0 74 92 \u003c0f\u003e 0b eb 8e f0 80 4f 01 40 48 81 c7 00 14 00 00 e8 dd fb ff ff eb\n[709732.358972] RSP: 0018:ffffbb9700304740 EFLAGS: 00010202\n[709732.358976] RAX: 0000000000000001 RBX: 0000000000000003 RCX: 0000000000000001\n[709732.358979] RDX: ffffbb9700304970 RSI: ffff922fe1952e00 RDI: 0000000000000003\n[709732.358981] RBP: ffffbb9700304970 R08: ffff922fc868a600 R09: ffff922fc711e462\n[709732.358984] R10: 000000000000005f R11: ffff922ff0b27180 R12: ffffbb9700304960\n[709732.358987] R13: ffffbb9700304b08 R14: ffff922fc664b6c8 R15: ffff922fc664b660\n[709732.358990] FS:  0000000000000000(0000) GS:ffff92371fec0000(0000) knlGS:0000000000000000\n[709732.358993] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[709732.358996] CR2: 0000557a6655bdd0 CR3: 000000026020a001 CR4: 00000000007706e0\n[709732.358999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[709732.359001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[709732.359003] PKRU: 55555554\n[709732.359005] Call Trace:\n[709732.359009]  \u003cIRQ\u003e\n[709732.359035]  nft_pipapo_avx2_lookup+0x4c/0x1cba [nf_tables]\n[709732.359046]  ? sched_clock+0x5/0x10\n[709732.359054]  ? sched_clock_cpu+0xc/0xb0\n[709732.359061]  ? record_times+0x16/0x80\n[709732.359068]  ? plist_add+0xc1/0x100\n[709732.359073]  ? psi_group_change+0x47/0x230\n[709732.359079]  ? skb_clone+0x4d/0xb0\n[709732.359085]  ? enqueue_task_rt+0x22b/0x310\n[709732.359098]  ? bnxt_start_xmit+0x1e8/0xaf0 [bnxt_en]\n[709732.359102]  ? packet_rcv+0x40/0x4a0\n[709732.359121]  nft_lookup_eval+0x59/0x160 [nf_tables]\n[709732.359133]  nft_do_chain+0x350/0x500 [nf_tables]\n[709732.359152]  ? nft_lookup_eval+0x59/0x160 [nf_tables]\n[709732.359163]  ? nft_do_chain+0x364/0x500 [nf_tables]\n[709732.359172]  ? fib4_rule_action+0x6d/0x80\n[709732.359178]  ? fib_rules_lookup+0x107/0x250\n[709732.359184]  nft_nat_do_chain+0x8a/0xf2 [nft_chain_nat]\n[709732.359193]  nf_nat_inet_fn+0xea/0x210 [nf_nat]\n[709732.359202]  nf_nat_ipv4_out+0x14/0xa0 [nf_nat]\n[709732.359207]  nf_hook_slow+0x44/0xc0\n[709732.359214]  ip_output+0xd2/0x100\n[709732.359221]  ? __ip_finish_output+0x210/0x210\n[709732.359226]  ip_forward+0x37d/0x4a0\n[709732.359232]  ? ip4_key_hashfn+0xb0/0xb0\n[709732.359238]  ip_subli\n---truncated---"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T13:49:24.572Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/b1f45a26bd322525c14edd9504f6d46dfad679a4"
            },
            {
              "url": "https://git.kernel.org/stable/c/727a2b4fc951ee69847d4904d98961856ea9fbe6"
            },
            {
              "url": "https://git.kernel.org/stable/c/f0b3d338064e1fe7531f0d2977e35f3b334abfb4"
            }
          ],
          "title": "netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2021-47174",
        "datePublished": "2024-03-25T09:16:25.273Z",
        "dateReserved": "2024-03-25T09:12:14.111Z",
        "dateUpdated": "2026-05-11T13:49:24.572Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.