PT-2025-51675 · Linux+2 · Linux Kernel+2
Published
2025-12-16
·
Updated
2026-04-06
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CVE-2025-68262
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The crypto/zstd module contains a flaw where per-CPU streams can be freed multiple times, leading to a double-free issue. This occurs when multiple transform contexts (tfms) are allocated and freed, as the zstd streams are freed during each tfm destruction instead of being managed at the module level. This results in the same shared per-CPU streams being freed more than once. A double-free can lead to system instability or potentially be exploited. The issue is demonstrated by a stack trace involving a bad page state and the
crypto acomp free streams and crypto acomp exit tfm functions.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu