CVE-2022-50314 (GCVE-0-2022-50314)
Vulnerability from cvelistv5
Published
2025-09-15 14:46
Modified
2025-09-15 14:46
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nbd: Fix hung when signal interrupts nbd_start_device_ioctl() syzbot reported hung task [1]. The following program is a simplified version of the reproducer: int main(void) { int sv[2], fd; if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) < 0) return 1; if ((fd = open("/dev/nbd0", 0)) < 0) return 1; if (ioctl(fd, NBD_SET_SIZE_BLOCKS, 0x81) < 0) return 1; if (ioctl(fd, NBD_SET_SOCK, sv[0]) < 0) return 1; if (ioctl(fd, NBD_DO_IT) < 0) return 1; return 0; } When signal interrupt nbd_start_device_ioctl() waiting the condition atomic_read(&config->recv_threads) == 0, the task can hung because it waits the completion of the inflight IOs. This patch fixes the issue by clearing queue, not just shutdown, when signal interrupt nbd_start_device_ioctl().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1de7c3cf48fc41cd95adb12bd1ea9033a917798a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3575949513ea3b387b30dac1e69468a923c86caf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ba3846cb3e2fb3c6fbf79e998472821b298419e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/62006a72b05e0d38727eef5188700f2488be5e89
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b2700f98b3f4dd19fb4315b70581e5caff89eb49
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0d73be0af8c1310713bc39a8d7a22e35084e14f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
 Create a notification for this product.
   Linux Linux Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/nbd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3ba3846cb3e2fb3c6fbf79e998472821b298419e",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "3575949513ea3b387b30dac1e69468a923c86caf",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "b2700f98b3f4dd19fb4315b70581e5caff89eb49",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "c0d73be0af8c1310713bc39a8d7a22e35084e14f",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "62006a72b05e0d38727eef5188700f2488be5e89",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "1de7c3cf48fc41cd95adb12bd1ea9033a917798a",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/nbd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.296",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "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": "4.14.296",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.262",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.220",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.150",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.75",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnbd: Fix hung when signal interrupts nbd_start_device_ioctl()\n\nsyzbot reported hung task [1].  The following program is a simplified\nversion of the reproducer:\n\nint main(void)\n{\n\tint sv[2], fd;\n\n\tif (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) \u003c 0)\n\t\treturn 1;\n\tif ((fd = open(\"/dev/nbd0\", 0)) \u003c 0)\n\t\treturn 1;\n\tif (ioctl(fd, NBD_SET_SIZE_BLOCKS, 0x81) \u003c 0)\n\t\treturn 1;\n\tif (ioctl(fd, NBD_SET_SOCK, sv[0]) \u003c 0)\n\t\treturn 1;\n\tif (ioctl(fd, NBD_DO_IT) \u003c 0)\n\t\treturn 1;\n\treturn 0;\n}\n\nWhen signal interrupt nbd_start_device_ioctl() waiting the condition\natomic_read(\u0026config-\u003erecv_threads) == 0, the task can hung because it\nwaits the completion of the inflight IOs.\n\nThis patch fixes the issue by clearing queue, not just shutdown, when\nsignal interrupt nbd_start_device_ioctl()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:46:09.240Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3ba3846cb3e2fb3c6fbf79e998472821b298419e"
        },
        {
          "url": "https://git.kernel.org/stable/c/c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398"
        },
        {
          "url": "https://git.kernel.org/stable/c/3575949513ea3b387b30dac1e69468a923c86caf"
        },
        {
          "url": "https://git.kernel.org/stable/c/b2700f98b3f4dd19fb4315b70581e5caff89eb49"
        },
        {
          "url": "https://git.kernel.org/stable/c/c0d73be0af8c1310713bc39a8d7a22e35084e14f"
        },
        {
          "url": "https://git.kernel.org/stable/c/62006a72b05e0d38727eef5188700f2488be5e89"
        },
        {
          "url": "https://git.kernel.org/stable/c/35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf"
        },
        {
          "url": "https://git.kernel.org/stable/c/1de7c3cf48fc41cd95adb12bd1ea9033a917798a"
        }
      ],
      "title": "nbd: Fix hung when signal interrupts nbd_start_device_ioctl()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50314",
    "datePublished": "2025-09-15T14:46:09.240Z",
    "dateReserved": "2025-09-15T14:18:36.813Z",
    "dateUpdated": "2025-09-15T14:46:09.240Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50314\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T15:15:43.247\",\"lastModified\":\"2025-09-15T15:22:27.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnbd: Fix hung when signal interrupts nbd_start_device_ioctl()\\n\\nsyzbot reported hung task [1].  The following program is a simplified\\nversion of the reproducer:\\n\\nint main(void)\\n{\\n\\tint sv[2], fd;\\n\\n\\tif (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) \u003c 0)\\n\\t\\treturn 1;\\n\\tif ((fd = open(\\\"/dev/nbd0\\\", 0)) \u003c 0)\\n\\t\\treturn 1;\\n\\tif (ioctl(fd, NBD_SET_SIZE_BLOCKS, 0x81) \u003c 0)\\n\\t\\treturn 1;\\n\\tif (ioctl(fd, NBD_SET_SOCK, sv[0]) \u003c 0)\\n\\t\\treturn 1;\\n\\tif (ioctl(fd, NBD_DO_IT) \u003c 0)\\n\\t\\treturn 1;\\n\\treturn 0;\\n}\\n\\nWhen signal interrupt nbd_start_device_ioctl() waiting the condition\\natomic_read(\u0026config-\u003erecv_threads) == 0, the task can hung because it\\nwaits the completion of the inflight IOs.\\n\\nThis patch fixes the issue by clearing queue, not just shutdown, when\\nsignal interrupt nbd_start_device_ioctl().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1de7c3cf48fc41cd95adb12bd1ea9033a917798a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3575949513ea3b387b30dac1e69468a923c86caf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3ba3846cb3e2fb3c6fbf79e998472821b298419e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/62006a72b05e0d38727eef5188700f2488be5e89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b2700f98b3f4dd19fb4315b70581e5caff89eb49\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c0d73be0af8c1310713bc39a8d7a22e35084e14f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.