CVE-2023-54042

powerpc/64s: Fix VAS mm use after free

State: Published
Severity: 7.8 High
Published: Dec 24, 2025
Updated: Oct 15, 2026
Reserved: Dec 24, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

powerpc/64s: Fix VAS mm use after free

The refcount on mm is dropped before the coprocessor is detached.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before f7d92313002b2d543500cc417d8079aaed1fb0a8Affected 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before 4e82f92c349ea603736ade1e814861c0182a55adAffected 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before db8657fdd53c5e3069149d7f957cb60e63027bb2Affected 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before 421cd1544480f2458042fe7f4913a2069c4d7251Affected 7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before b4bda59b47879cce38a6ec5a01cd3cac702b5331Affected
LinuxLinux	5.14Affected before 5.14Not affected 5.15.121 through 5.15.Not affected 6.1.39 through 6.1.Not affected 6.3.13 through 6.3.Not affected 6.4.4 through 6.4.Not affected 6.5 and laterNot affected

Product

Versions

LinuxLinux

7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before f7d92313002b2d543500cc417d8079aaed1fb0a8Affected
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before 4e82f92c349ea603736ade1e814861c0182a55adAffected
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before db8657fdd53c5e3069149d7f957cb60e63027bb2Affected
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before 421cd1544480f2458042fe7f4913a2069c4d7251Affected
7bc6f71bdff5f8921e324da0a8fad6f4e2e63a85 to before b4bda59b47879cce38a6ec5a01cd3cac702b5331Affected

LinuxLinux

5.14Affected
before 5.14Not affected
5.15.121 through 5.15.*Not affected
6.1.39 through 6.1.*Not affected
6.3.13 through 6.3.*Not affected
6.4.4 through 6.4.*Not affected
6.5 and laterNot affected

References

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