CVE-2021-47504 (GCVE-0-2021-47504)

Vulnerability from cvelistv5 – Published: 2024-05-24 15:01 – Updated: 2025-07-28 11:16
VLAI?
Title
io_uring: ensure task_work gets run as part of cancelations
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring: ensure task_work gets run as part of cancelations If we successfully cancel a work item but that work item needs to be processed through task_work, then we can be sleeping uninterruptibly in io_uring_cancel_generic() and never process it. Hence we don't make forward progress and we end up with an uninterruptible sleep warning. While in there, correct a comment that should be IFF, not IIF.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 8e12976c0c19ebc14b60046b1348c516a74c25a2 (git)
Affected: 2b188cc1bb857a9d4701ae59aa7768b5124e262e , < 78a780602075d8b00c98070fa26e389b3b3efa72 (git)
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    Linux Linux Affected: 5.1
Unaffected: 0 , < 5.1 (semver)
Unaffected: 5.15.8 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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