PT-2023-9701 · Linux+5 · Linux Kernel+5
Wangjinchao
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Published
2023-10-27
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Updated
2025-12-16
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CVE-2023-52854
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
The issue is related to a Use-After-Free (UAF) problem in the Linux kernel's padata component. In a high-load arm64 environment, the pcrypt aead01 test in LTP can lead to system UAF issues. This occurs because
local bh enable() in padata takes longer to execute than usual due to high system load and accumulated unexecuted softirq, resulting in pd being released by padata free shell() before accessing pd->refcnt. The fix involves adding refcount dec and test before calling padata free pd in padata free shell().Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu