CVE-2022-50314 (GCVE-0-2022-50314)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:46 – Updated: 2025-09-15 14:46
VLAI?
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().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3ba3846cb3e2fb3c6fbf79e998472821b298419e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3575949513ea3b387b30dac1e69468a923c86caf (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b2700f98b3f4dd19fb4315b70581e5caff89eb49 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c0d73be0af8c1310713bc39a8d7a22e35084e14f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 62006a72b05e0d38727eef5188700f2488be5e89 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1de7c3cf48fc41cd95adb12bd1ea9033a917798a (git)
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    Linux Linux Unaffected: 4.14.296 , ≤ 4.14.* (semver)
Unaffected: 4.19.262 , ≤ 4.19.* (semver)
Unaffected: 5.4.220 , ≤ 5.4.* (semver)
Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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}


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Sightings

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  • 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.