PT-2025-4314 · Linux+4 · Linux Kernel+4
Published
2025-01-10
·
Updated
2025-11-11
·
CVE-2025-21633
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A use-after-free issue has been identified in the Linux kernel, specifically in the io uring/sqpoll component. This issue occurs when the SQPOLL task tctx setup fails, which can happen due to fault injection to insert allocation errors. The error is reported by Syzkeller as a slab-use-after-free in thread group cputime. The issue arises from the sqd->task not being cleared properly in cases of tctx setup failure.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Linuxmint
Linux Kernel
Red Hat
Ubuntu