vulnerability
Ubuntu: (CVE-2021-47504): linux-fips vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | May 24, 2024 | Jun 26, 2025 | Sep 30, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
May 24, 2024
Added
Jun 26, 2025
Modified
Sep 30, 2025
Description
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.
Solution
no-fix-ubuntu-package
References
- CVE-2021-47504
- https://attackerkb.com/topics/CVE-2021-47504
- URL-https://git.kernel.org/linus/78a780602075d8b00c98070fa26e389b3b3efa72
- URL-https://git.kernel.org/stable/c/78a780602075d8b00c98070fa26e389b3b3efa72
- URL-https://git.kernel.org/stable/c/8e12976c0c19ebc14b60046b1348c516a74c25a2
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47504
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