CVE-2022-50854 (GCVE-0-2022-50854)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:15 – Updated: 2026-05-11 19:26
VLAI
Title
nfc: virtual_ncidev: Fix memory leak in virtual_nci_send()
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: virtual_ncidev: Fix memory leak in virtual_nci_send() skb should be free in virtual_nci_send(), otherwise kmemleak will report memleak. Steps for reproduction (simulated in qemu): cd tools/testing/selftests/nci make ./nci_dev BUG: memory leak unreferenced object 0xffff888107588000 (size 208): comm "nci_dev", pid 206, jiffies 4294945376 (age 368.248s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000008d94c8fd>] __alloc_skb+0x1da/0x290 [<00000000278bc7f8>] nci_send_cmd+0xa3/0x350 [<0000000081256a22>] nci_reset_req+0x6b/0xa0 [<000000009e721112>] __nci_request+0x90/0x250 [<000000005d556e59>] nci_dev_up+0x217/0x5b0 [<00000000e618ce62>] nfc_dev_up+0x114/0x220 [<00000000981e226b>] nfc_genl_dev_up+0x94/0xe0 [<000000009bb03517>] genl_family_rcv_msg_doit.isra.14+0x228/0x2d0 [<00000000b7f8c101>] genl_rcv_msg+0x35c/0x640 [<00000000c94075ff>] netlink_rcv_skb+0x11e/0x350 [<00000000440cfb1e>] genl_rcv+0x24/0x40 [<0000000062593b40>] netlink_unicast+0x43f/0x640 [<000000001d0b13cc>] netlink_sendmsg+0x73a/0xbf0 [<000000003272487f>] __sys_sendto+0x324/0x370 [<00000000ef9f1747>] __x64_sys_sendto+0xdd/0x1b0 [<000000001e437841>] do_syscall_64+0x3f/0x90
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e624e6c3e777fb3dfed036b9da4d433aee3608a5 , < 88e879c9f59511174ef0ab1a3c9c83e2dbf8a213 (git)
Affected: e624e6c3e777fb3dfed036b9da4d433aee3608a5 , < 2c46a9a5f0b1c7341aa67667801079f3ff571678 (git)
Affected: e624e6c3e777fb3dfed036b9da4d433aee3608a5 , < e840d8f4a1b323973052a1af5ad4edafcde8ae3d (git)
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Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.77 , ≤ 5.15.* (semver)
Unaffected: 6.0.7 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nfc/virtual_ncidev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "88e879c9f59511174ef0ab1a3c9c83e2dbf8a213",
              "status": "affected",
              "version": "e624e6c3e777fb3dfed036b9da4d433aee3608a5",
              "versionType": "git"
            },
            {
              "lessThan": "2c46a9a5f0b1c7341aa67667801079f3ff571678",
              "status": "affected",
              "version": "e624e6c3e777fb3dfed036b9da4d433aee3608a5",
              "versionType": "git"
            },
            {
              "lessThan": "e840d8f4a1b323973052a1af5ad4edafcde8ae3d",
              "status": "affected",
              "version": "e624e6c3e777fb3dfed036b9da4d433aee3608a5",
              "versionType": "git"
            }
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nfc/virtual_ncidev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.77",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.7",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: virtual_ncidev: Fix memory leak in virtual_nci_send()\n\nskb should be free in virtual_nci_send(), otherwise kmemleak will report\nmemleak.\n\nSteps for reproduction (simulated in qemu):\n\tcd tools/testing/selftests/nci\n\tmake\n\t./nci_dev\n\nBUG: memory leak\nunreferenced object 0xffff888107588000 (size 208):\n  comm \"nci_dev\", pid 206, jiffies 4294945376 (age 368.248s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c000000008d94c8fd\u003e] __alloc_skb+0x1da/0x290\n    [\u003c00000000278bc7f8\u003e] nci_send_cmd+0xa3/0x350\n    [\u003c0000000081256a22\u003e] nci_reset_req+0x6b/0xa0\n    [\u003c000000009e721112\u003e] __nci_request+0x90/0x250\n    [\u003c000000005d556e59\u003e] nci_dev_up+0x217/0x5b0\n    [\u003c00000000e618ce62\u003e] nfc_dev_up+0x114/0x220\n    [\u003c00000000981e226b\u003e] nfc_genl_dev_up+0x94/0xe0\n    [\u003c000000009bb03517\u003e] genl_family_rcv_msg_doit.isra.14+0x228/0x2d0\n    [\u003c00000000b7f8c101\u003e] genl_rcv_msg+0x35c/0x640\n    [\u003c00000000c94075ff\u003e] netlink_rcv_skb+0x11e/0x350\n    [\u003c00000000440cfb1e\u003e] genl_rcv+0x24/0x40\n    [\u003c0000000062593b40\u003e] netlink_unicast+0x43f/0x640\n    [\u003c000000001d0b13cc\u003e] netlink_sendmsg+0x73a/0xbf0\n    [\u003c000000003272487f\u003e] __sys_sendto+0x324/0x370\n    [\u003c00000000ef9f1747\u003e] __x64_sys_sendto+0xdd/0x1b0\n    [\u003c000000001e437841\u003e] do_syscall_64+0x3f/0x90"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:26:24.301Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/88e879c9f59511174ef0ab1a3c9c83e2dbf8a213"
        },
        {
          "url": "https://git.kernel.org/stable/c/2c46a9a5f0b1c7341aa67667801079f3ff571678"
        },
        {
          "url": "https://git.kernel.org/stable/c/e840d8f4a1b323973052a1af5ad4edafcde8ae3d"
        }
      ],
      "title": "nfc: virtual_ncidev: Fix memory leak in virtual_nci_send()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50854",
    "datePublished": "2025-12-30T12:15:29.792Z",
    "dateReserved": "2025-12-30T12:06:07.134Z",
    "dateUpdated": "2026-05-11T19:26:24.301Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50854",
      "date": "2026-09-27",
      "epss": "0.00197",
      "percentile": "0.0847"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/nfc/virtual_ncidev.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "88e879c9f59511174ef0ab1a3c9c83e2dbf8a213",
                    "status": "affected",
                    "version": "e624e6c3e777fb3dfed036b9da4d433aee3608a5",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2c46a9a5f0b1c7341aa67667801079f3ff571678",
                    "status": "affected",
                    "version": "e624e6c3e777fb3dfed036b9da4d433aee3608a5",
                    "versionType": "git"
                  },
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                    "versionType": "git"
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                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/nfc/virtual_ncidev.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.12"
                  },
                  {
                    "lessThan": "5.12",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.77",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.0.*",
                    "status": "unaffected",
                    "version": "6.0.7",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.1",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: virtual_ncidev: Fix memory leak in virtual_nci_send()\n\nskb should be free in virtual_nci_send(), otherwise kmemleak will report\nmemleak.\n\nSteps for reproduction (simulated in qemu):\n\tcd tools/testing/selftests/nci\n\tmake\n\t./nci_dev\n\nBUG: memory leak\nunreferenced object 0xffff888107588000 (size 208):\n  comm \"nci_dev\", pid 206, jiffies 4294945376 (age 368.248s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c000000008d94c8fd\u003e] __alloc_skb+0x1da/0x290\n    [\u003c00000000278bc7f8\u003e] nci_send_cmd+0xa3/0x350\n    [\u003c0000000081256a22\u003e] nci_reset_req+0x6b/0xa0\n    [\u003c000000009e721112\u003e] __nci_request+0x90/0x250\n    [\u003c000000005d556e59\u003e] nci_dev_up+0x217/0x5b0\n    [\u003c00000000e618ce62\u003e] nfc_dev_up+0x114/0x220\n    [\u003c00000000981e226b\u003e] nfc_genl_dev_up+0x94/0xe0\n    [\u003c000000009bb03517\u003e] genl_family_rcv_msg_doit.isra.14+0x228/0x2d0\n    [\u003c00000000b7f8c101\u003e] genl_rcv_msg+0x35c/0x640\n    [\u003c00000000c94075ff\u003e] netlink_rcv_skb+0x11e/0x350\n    [\u003c00000000440cfb1e\u003e] genl_rcv+0x24/0x40\n    [\u003c0000000062593b40\u003e] netlink_unicast+0x43f/0x640\n    [\u003c000000001d0b13cc\u003e] netlink_sendmsg+0x73a/0xbf0\n    [\u003c000000003272487f\u003e] __sys_sendto+0x324/0x370\n    [\u003c00000000ef9f1747\u003e] __x64_sys_sendto+0xdd/0x1b0\n    [\u003c000000001e437841\u003e] do_syscall_64+0x3f/0x90"
          }
        ],
        "id": "CVE-2022-50854",
        "lastModified": "2026-06-17T05:24:18.110",
        "metrics": {},
        "published": "2025-12-30T13:16:00.117",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2c46a9a5f0b1c7341aa67667801079f3ff571678"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/88e879c9f59511174ef0ab1a3c9c83e2dbf8a213"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e840d8f4a1b323973052a1af5ad4edafcde8ae3d"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:28:23+00:00",
      "cve": "CVE-2022-50854",
      "id": "CVE-2022-50854",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nfc: virtual_ncidev: Fix memory leak in virtual_nci_send()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50854.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T01:20:26Z",
      "cve": "CVE-2022-50854",
      "id": "CVE-2022-50854",
      "initial_release_date": "2025-12-31T00:31:13Z",
      "product_status:known_affected": "128",
      "product_status:known_not_affected": "432",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50854",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50854.json",
      "version": "12"
    }
  }
}



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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.
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  • 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.



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