Vulnerability-Lookup

FKIE_CVE-2025-21960

Vulnerability from fkie_nvd - Published: 2025-04-01 16:15 - Updated: 2026-07-30 06:21

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: eth: bnxt: do not update checksum in bnxt_xdp_build_skb() The bnxt_rx_pkt() updates ip_summed value at the end if checksum offload is enabled. When the XDP-MB program is attached and it returns XDP_PASS, the bnxt_xdp_build_skb() is called to update skb_shared_info. The main purpose of bnxt_xdp_build_skb() is to update skb_shared_info, but it updates ip_summed value too if checksum offload is enabled. This is actually duplicate work. When the bnxt_rx_pkt() updates ip_summed value, it checks if ip_summed is CHECKSUM_NONE or not. It means that ip_summed should be CHECKSUM_NONE at this moment. But ip_summed may already be updated to CHECKSUM_UNNECESSARY in the XDP-MB-PASS path. So the by skb_checksum_none_assert() WARNS about it. This is duplicate work and updating ip_summed in the bnxt_xdp_build_skb() is not needed. Splat looks like: WARNING: CPU: 3 PID: 5782 at ./include/linux/skbuff.h:5155 bnxt_rx_pkt+0x479b/0x7610 [bnxt_en] Modules linked in: bnxt_re bnxt_en rdma_ucm rdma_cm iw_cm ib_cm ib_uverbs veth xt_nat xt_tcpudp xt_conntrack nft_chain_nat xt_MASQUERADE nf_] CPU: 3 UID: 0 PID: 5782 Comm: socat Tainted: G W 6.14.0-rc4+ #27 Tainted: [W]=WARN Hardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021 RIP: 0010:bnxt_rx_pkt+0x479b/0x7610 [bnxt_en] Code: 54 24 0c 4c 89 f1 4c 89 ff c1 ea 1f ff d3 0f 1f 00 49 89 c6 48 85 c0 0f 84 4c e5 ff ff 48 89 c7 e8 ca 3d a0 c8 e9 8f f4 ff ff <0f> 0b f RSP: 0018:ffff88881ba09928 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 00000000c7590303 RCX: 0000000000000000 RDX: 1ffff1104e7d1610 RSI: 0000000000000001 RDI: ffff8881c91300b8 RBP: ffff88881ba09b28 R08: ffff888273e8b0d0 R09: ffff888273e8b070 R10: ffff888273e8b010 R11: ffff888278b0f000 R12: ffff888273e8b080 R13: ffff8881c9130e00 R14: ffff8881505d3800 R15: ffff888273e8b000 FS: 00007f5a2e7be080(0000) GS:ffff88881ba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff2e708ff8 CR3: 000000013e3b0000 CR4: 00000000007506f0 PKRU: 55555554 Call Trace: <IRQ> ? __warn+0xcd/0x2f0 ? bnxt_rx_pkt+0x479b/0x7610 ? report_bug+0x326/0x3c0 ? handle_bug+0x53/0xa0 ? exc_invalid_op+0x14/0x50 ? asm_exc_invalid_op+0x16/0x20 ? bnxt_rx_pkt+0x479b/0x7610 ? bnxt_rx_pkt+0x3e41/0x7610 ? __pfx_bnxt_rx_pkt+0x10/0x10 ? napi_complete_done+0x2cf/0x7d0 __bnxt_poll_work+0x4e8/0x1220 ? __pfx___bnxt_poll_work+0x10/0x10 ? __pfx_mark_lock.part.0+0x10/0x10 bnxt_poll_p5+0x36a/0xfa0 ? __pfx_bnxt_poll_p5+0x10/0x10 __napi_poll.constprop.0+0xa0/0x440 net_rx_action+0x899/0xd00 ... Following ping.py patch adds xdp-mb-pass case. so ping.py is going to be able to reproduce this issue.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/44578bc6460b8fca530fc7bd5897c115d9bd27e2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5b57ed14a1b85e7ab0074d9668a0baa6c94826c7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c03e7d05aa0e2f7e9a9ce5ad8a12471a53f941dc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e8e3e03d69f2420eaa578199a65d281c58867105	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ee086c8e775f9690282e3d26471dbcfd5dad5a6a	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.14
linux	linux_kernel	6.14
linux	linux_kernel	6.14
linux	linux_kernel	6.14
linux	linux_kernel	6.14
linux	linux_kernel	6.14

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnxt/bnxt.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnxt/bnxt.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.132",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.84",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "36EE2A88-4836-42E6-9E9C-86989C38895E",
              "versionEndExcluding": "6.1.132",
              "versionStartIncluding": "5.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "994E0F00-FAC4-40E4-9068-C7D4D8242EC8",
              "versionEndExcluding": "6.6.84",
              "versionStartIncluding": "6.2",
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "D3D6550E-6679-4560-902D-AF52DCFE905B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "45B90F6B-BEC7-4D4E-883A-9DBADE021750",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "1759FFB7-531C-41B1-9AE1-FD3D80E0D920",
              "vulnerable": true
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          "negate": false,
          "operator": "OR"
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      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: bnxt: do not update checksum in bnxt_xdp_build_skb()\n\nThe bnxt_rx_pkt() updates ip_summed value at the end if checksum offload\nis enabled.\nWhen the XDP-MB program is attached and it returns XDP_PASS, the\nbnxt_xdp_build_skb() is called to update skb_shared_info.\nThe main purpose of bnxt_xdp_build_skb() is to update skb_shared_info,\nbut it updates ip_summed value too if checksum offload is enabled.\nThis is actually duplicate work.\n\nWhen the bnxt_rx_pkt() updates ip_summed value, it checks if ip_summed\nis CHECKSUM_NONE or not.\nIt means that ip_summed should be CHECKSUM_NONE at this moment.\nBut ip_summed may already be updated to CHECKSUM_UNNECESSARY in the\nXDP-MB-PASS path.\nSo the by skb_checksum_none_assert() WARNS about it.\n\nThis is duplicate work and updating ip_summed in the\nbnxt_xdp_build_skb() is not needed.\n\nSplat looks like:\nWARNING: CPU: 3 PID: 5782 at ./include/linux/skbuff.h:5155 bnxt_rx_pkt+0x479b/0x7610 [bnxt_en]\nModules linked in: bnxt_re bnxt_en rdma_ucm rdma_cm iw_cm ib_cm ib_uverbs veth xt_nat xt_tcpudp xt_conntrack nft_chain_nat xt_MASQUERADE nf_]\nCPU: 3 UID: 0 PID: 5782 Comm: socat Tainted: G        W          6.14.0-rc4+ #27\nTainted: [W]=WARN\nHardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021\nRIP: 0010:bnxt_rx_pkt+0x479b/0x7610 [bnxt_en]\nCode: 54 24 0c 4c 89 f1 4c 89 ff c1 ea 1f ff d3 0f 1f 00 49 89 c6 48 85 c0 0f 84 4c e5 ff ff 48 89 c7 e8 ca 3d a0 c8 e9 8f f4 ff ff \u003c0f\u003e 0b f\nRSP: 0018:ffff88881ba09928 EFLAGS: 00010202\nRAX: 0000000000000000 RBX: 00000000c7590303 RCX: 0000000000000000\nRDX: 1ffff1104e7d1610 RSI: 0000000000000001 RDI: ffff8881c91300b8\nRBP: ffff88881ba09b28 R08: ffff888273e8b0d0 R09: ffff888273e8b070\nR10: ffff888273e8b010 R11: ffff888278b0f000 R12: ffff888273e8b080\nR13: ffff8881c9130e00 R14: ffff8881505d3800 R15: ffff888273e8b000\nFS:  00007f5a2e7be080(0000) GS:ffff88881ba00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fff2e708ff8 CR3: 000000013e3b0000 CR4: 00000000007506f0\nPKRU: 55555554\nCall Trace:\n \u003cIRQ\u003e\n ? __warn+0xcd/0x2f0\n ? bnxt_rx_pkt+0x479b/0x7610\n ? report_bug+0x326/0x3c0\n ? handle_bug+0x53/0xa0\n ? exc_invalid_op+0x14/0x50\n ? asm_exc_invalid_op+0x16/0x20\n ? bnxt_rx_pkt+0x479b/0x7610\n ? bnxt_rx_pkt+0x3e41/0x7610\n ? __pfx_bnxt_rx_pkt+0x10/0x10\n ? napi_complete_done+0x2cf/0x7d0\n __bnxt_poll_work+0x4e8/0x1220\n ? __pfx___bnxt_poll_work+0x10/0x10\n ? __pfx_mark_lock.part.0+0x10/0x10\n bnxt_poll_p5+0x36a/0xfa0\n ? __pfx_bnxt_poll_p5+0x10/0x10\n __napi_poll.constprop.0+0xa0/0x440\n net_rx_action+0x899/0xd00\n...\n\nFollowing ping.py patch adds xdp-mb-pass case. so ping.py is going\nto be able to reproduce this issue."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: eth: bnxt: no actualice la suma de comprobaci\u00f3n en bnxt_xdp_build_skb() El bnxt_rx_pkt() actualiza el valor de ip_summed al final si la descarga de suma de comprobaci\u00f3n est\u00e1 habilitada. Cuando se adjunta el programa XDP-MB y devuelve XDP_PASS, se llama a bnxt_xdp_build_skb() para actualizar skb_shared_info. El prop\u00f3sito principal de bnxt_xdp_build_skb() es actualizar skb_shared_info, pero tambi\u00e9n actualiza el valor de ip_summed si la descarga de suma de comprobaci\u00f3n est\u00e1 habilitada. En realidad, esto es trabajo duplicado. Cuando bnxt_rx_pkt() actualiza el valor de ip_summed, verifica si ip_summed es CHECKSUM_NONE o no. Significa que ip_summed deber\u00eda ser CHECKSUM_NONE en este momento. Pero es posible que ip_summed ya est\u00e9 actualizado a CHECKSUM_UNNECESSARY en la ruta XDP-MB-PASS. Por lo tanto, skb_checksum_none_assert() advierte al respecto. Esto implica trabajo duplicado y no es necesario actualizar ip_summed en bnxt_xdp_build_skb(). El mensaje aparece as\u00ed: ADVERTENCIA: CPU: 3 PID: 5782 en ./include/linux/skbuff.h:5155 bnxt_rx_pkt+0x479b/0x7610 [bnxt_en] M\u00f3dulos vinculados: bnxt_re bnxt_en rdma_ucm rdma_cm iw_cm ib_cm ib_uverbs veth xt_nat xt_tcpudp xt_conntrack nft_chain_nat xt_MASQUERADE nf_] CPU: 3 UID: 0 PID: 5782 Comm: socat Contaminado: GW 6.14.0-rc4+ #27 Contaminado: [W]=WARN Nombre del hardware: Nombre del producto del sistema ASUS/PRIME Z690-P D4, BIOS 0603 11/01/2021 RIP: 0010:bnxt_rx_pkt+0x479b/0x7610 [bnxt_es] C\u00f3digo: 54 24 0c 4c 89 f1 4c 89 ff c1 ea 1f ff d3 0f 1f 00 49 89 c6 48 85 c0 0f 84 4c e5 ff ff 48 89 c7 e8 ca 3d a0 c8 e9 8f f4 ff ff \u0026lt;0f\u0026gt; 0b f RSP: 0018:ffff88881ba09928 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 00000000c7590303 RCX: 0000000000000000 RDX: 1ffff1104e7d1610 RSI: 0000000000000001 RDI: ffff8881c91300b8 RBP: ffff88881ba09b28 R08: ffff888273e8b0d0 R09: ffff888273e8b070 R10: ffff888273e8b010 R11: ffff888278b0f000 R12: ffff888273e8b080 R13: ffff8881c9130e00 R14: ffff8881505d3800 R15: ffff888273e8b000 FS: 00007f5a2e7be080(0000) GS:ffff88881ba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff2e708ff8 CR3: 000000013e3b0000 CR4: 00000000007506f0 PKRU: 55555554 Rastreo de llamadas:  ? __warn+0xcd/0x2f0 ? bnxt_rx_pkt+0x479b/0x7610 ? report_bug+0x326/0x3c0 ? __pfx_bnxt_rx_pkt+0x10/0x10 ? __bnxt_poll_work+0x4e8/0x1220 ? __pfx___bnxt_poll_work+0x10/0x10 ? El siguiente parche de ping.py agrega el caso xdp-mb-pass, por lo que ping.py podr\u00e1 reproducir este problema."
    }
  ],
  "id": "CVE-2025-21960",
  "lastModified": "2026-07-30T06:21:59.720",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "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"
      }
    ]
  },
  "published": "2025-04-01T16:15:27.230",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/44578bc6460b8fca530fc7bd5897c115d9bd27e2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5b57ed14a1b85e7ab0074d9668a0baa6c94826c7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c03e7d05aa0e2f7e9a9ce5ad8a12471a53f941dc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e8e3e03d69f2420eaa578199a65d281c58867105"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ee086c8e775f9690282e3d26471dbcfd5dad5a6a"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-21960 (GCVE-0-2025-21960)

Vulnerability from cvelistv5 – Published: 2025-04-01 15:46 – Updated: 2026-08-05 11:55

Title

eth: bnxt: do not update checksum in bnxt_xdp_build_skb()

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/e8e3e03d69f2420ea…
https://git.kernel.org/stable/c/ee086c8e775f96902…
https://git.kernel.org/stable/c/5b57ed14a1b85e7ab…
https://git.kernel.org/stable/c/44578bc6460b8fca5…
https://git.kernel.org/stable/c/c03e7d05aa0e2f7e9…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1dc4c557bfedfcdf7fc0c46795857773b7ad66e7 , < e8e3e03d69f2420eaa578199a65d281c58867105 (git) Affected: 1dc4c557bfedfcdf7fc0c46795857773b7ad66e7 , < ee086c8e775f9690282e3d26471dbcfd5dad5a6a (git) Affected: 1dc4c557bfedfcdf7fc0c46795857773b7ad66e7 , < 5b57ed14a1b85e7ab0074d9668a0baa6c94826c7 (git) Affected: 1dc4c557bfedfcdf7fc0c46795857773b7ad66e7 , < 44578bc6460b8fca530fc7bd5897c115d9bd27e2 (git) Affected: 1dc4c557bfedfcdf7fc0c46795857773b7ad66e7 , < c03e7d05aa0e2f7e9a9ce5ad8a12471a53f941dc (git)
Linux	Linux	Affected: 5.19 Unaffected: 0 , < 5.19 (semver) Unaffected: 6.1.132 , ≤ 6.1.* (semver) Unaffected: 6.6.84 , ≤ 6.6.* (semver) Unaffected: 6.12.20 , ≤ 6.12.* (semver) Unaffected: 6.13.8 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:40:02.778Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnxt/bnxt.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e8e3e03d69f2420eaa578199a65d281c58867105",
              "status": "affected",
              "version": "1dc4c557bfedfcdf7fc0c46795857773b7ad66e7",
              "versionType": "git"
            },
            {
              "lessThan": "ee086c8e775f9690282e3d26471dbcfd5dad5a6a",
              "status": "affected",
              "version": "1dc4c557bfedfcdf7fc0c46795857773b7ad66e7",
              "versionType": "git"
            },
            {
              "lessThan": "5b57ed14a1b85e7ab0074d9668a0baa6c94826c7",
              "status": "affected",
              "version": "1dc4c557bfedfcdf7fc0c46795857773b7ad66e7",
              "versionType": "git"
            },
            {
              "lessThan": "44578bc6460b8fca530fc7bd5897c115d9bd27e2",
              "status": "affected",
              "version": "1dc4c557bfedfcdf7fc0c46795857773b7ad66e7",
              "versionType": "git"
            },
            {
              "lessThan": "c03e7d05aa0e2f7e9a9ce5ad8a12471a53f941dc",
              "status": "affected",
              "version": "1dc4c557bfedfcdf7fc0c46795857773b7ad66e7",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnxt/bnxt.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c",
            "drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.132",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.84",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.20",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.132",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.84",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.20",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.8",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: bnxt: do not update checksum in bnxt_xdp_build_skb()\n\nThe bnxt_rx_pkt() updates ip_summed value at the end if checksum offload\nis enabled.\nWhen the XDP-MB program is attached and it returns XDP_PASS, the\nbnxt_xdp_build_skb() is called to update skb_shared_info.\nThe main purpose of bnxt_xdp_build_skb() is to update skb_shared_info,\nbut it updates ip_summed value too if checksum offload is enabled.\nThis is actually duplicate work.\n\nWhen the bnxt_rx_pkt() updates ip_summed value, it checks if ip_summed\nis CHECKSUM_NONE or not.\nIt means that ip_summed should be CHECKSUM_NONE at this moment.\nBut ip_summed may already be updated to CHECKSUM_UNNECESSARY in the\nXDP-MB-PASS path.\nSo the by skb_checksum_none_assert() WARNS about it.\n\nThis is duplicate work and updating ip_summed in the\nbnxt_xdp_build_skb() is not needed.\n\nSplat looks like:\nWARNING: CPU: 3 PID: 5782 at ./include/linux/skbuff.h:5155 bnxt_rx_pkt+0x479b/0x7610 [bnxt_en]\nModules linked in: bnxt_re bnxt_en rdma_ucm rdma_cm iw_cm ib_cm ib_uverbs veth xt_nat xt_tcpudp xt_conntrack nft_chain_nat xt_MASQUERADE nf_]\nCPU: 3 UID: 0 PID: 5782 Comm: socat Tainted: G        W          6.14.0-rc4+ #27\nTainted: [W]=WARN\nHardware name: ASUS System Product Name/PRIME Z690-P D4, BIOS 0603 11/01/2021\nRIP: 0010:bnxt_rx_pkt+0x479b/0x7610 [bnxt_en]\nCode: 54 24 0c 4c 89 f1 4c 89 ff c1 ea 1f ff d3 0f 1f 00 49 89 c6 48 85 c0 0f 84 4c e5 ff ff 48 89 c7 e8 ca 3d a0 c8 e9 8f f4 ff ff \u003c0f\u003e 0b f\nRSP: 0018:ffff88881ba09928 EFLAGS: 00010202\nRAX: 0000000000000000 RBX: 00000000c7590303 RCX: 0000000000000000\nRDX: 1ffff1104e7d1610 RSI: 0000000000000001 RDI: ffff8881c91300b8\nRBP: ffff88881ba09b28 R08: ffff888273e8b0d0 R09: ffff888273e8b070\nR10: ffff888273e8b010 R11: ffff888278b0f000 R12: ffff888273e8b080\nR13: ffff8881c9130e00 R14: ffff8881505d3800 R15: ffff888273e8b000\nFS:  00007f5a2e7be080(0000) GS:ffff88881ba00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fff2e708ff8 CR3: 000000013e3b0000 CR4: 00000000007506f0\nPKRU: 55555554\nCall Trace:\n \u003cIRQ\u003e\n ? __warn+0xcd/0x2f0\n ? bnxt_rx_pkt+0x479b/0x7610\n ? report_bug+0x326/0x3c0\n ? handle_bug+0x53/0xa0\n ? exc_invalid_op+0x14/0x50\n ? asm_exc_invalid_op+0x16/0x20\n ? bnxt_rx_pkt+0x479b/0x7610\n ? bnxt_rx_pkt+0x3e41/0x7610\n ? __pfx_bnxt_rx_pkt+0x10/0x10\n ? napi_complete_done+0x2cf/0x7d0\n __bnxt_poll_work+0x4e8/0x1220\n ? __pfx___bnxt_poll_work+0x10/0x10\n ? __pfx_mark_lock.part.0+0x10/0x10\n bnxt_poll_p5+0x36a/0xfa0\n ? __pfx_bnxt_poll_p5+0x10/0x10\n __napi_poll.constprop.0+0xa0/0x440\n net_rx_action+0x899/0xd00\n...\n\nFollowing ping.py patch adds xdp-mb-pass case. so ping.py is going\nto be able to reproduce this issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable code is the bnxt_en receive path, reached purely by processing an inbound packet in NAPI/softirq context with no local access required. Jumbo frames of the required size are routable within datacenter fabrics and cloud VPCs, so an off-segment remote peer can deliver the triggering packet.\nAC:L - In an affected deployment the attacker triggers the assertion deterministically with a single ordinary oversized TCP/UDP packet carrying a valid L4 checksum \u2014 there is no race to win, no memory layout to groom, and no victim state to line up. The XDP-MB program and jumbo MTU are properties of whether the target is vulnerable at all, not extra effort the attacker must expend.\nPR:N - The trigger is an unauthenticated raw packet consumed by the NIC driver before any protocol-level authentication or socket ownership check. The attacker needs no account, credential, or capability on the target.\nUI:N - The packet is processed automatically by the NAPI poll loop as soon as it arrives on the wire. No administrator or user action is needed at exploitation time.\nS:U - The fault and its consequences are confined to the kernel of the receiving host, with no crossing of a VM, IOMMU, or sandbox boundary. This is a standard in-kernel driver defect.\nC:N - The defect is a redundant store of the exact value the driver writes moments later, so no out-of-bounds or freed memory is ever read and nothing is returned to the attacker. The remote attacker who triggers the splat has no channel to read the resulting dmesg output.\nI:N - No attacker-controlled data is written anywhere; the duplicated ip_summed/csum_level assignment stores the same hardware-derived values that bnxt_rx_pkt() stores unconditionally. There is no OOB write, type confusion, or control-flow primitive.\nA:H - Every qualifying inbound packet drives the kernel into a WARN splat in softirq context, which is an immediate kernel panic on the widely used panic_on_warn=1 configuration, taking the whole host down. Even short of panic it taints the kernel and aborts orderly processing from the interrupt path."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:55:39.009Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e8e3e03d69f2420eaa578199a65d281c58867105"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee086c8e775f9690282e3d26471dbcfd5dad5a6a"
        },
        {
          "url": "https://git.kernel.org/stable/c/5b57ed14a1b85e7ab0074d9668a0baa6c94826c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/44578bc6460b8fca530fc7bd5897c115d9bd27e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/c03e7d05aa0e2f7e9a9ce5ad8a12471a53f941dc"
        }
      ],
      "title": "eth: bnxt: do not update checksum in bnxt_xdp_build_skb()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21960",
    "datePublished": "2025-04-01T15:46:58.291Z",
    "dateReserved": "2024-12-29T08:45:45.795Z",
    "dateUpdated": "2026-08-05T11:55:39.009Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.