What’s Vulnerable › Vulnerabilities

CVE-2023-54042: powerpc/64s: Fix VAS mm use after free

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-24 · updated 2026-10-15

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.

Affected products

• Linux kernel: 5.14 — fixed in 6.5

How to fix

Upgrade to a fixed version: Linux kernel 6.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/421cd1544480f2458042fe7f4913a2069c4d7251
• https://git.kernel.org/stable/c/4e82f92c349ea603736ade1e814861c0182a55ad
• https://git.kernel.org/stable/c/b4bda59b47879cce38a6ec5a01cd3cac702b5331
• https://git.kernel.org/stable/c/db8657fdd53c5e3069149d7f957cb60e63027bb2
• https://git.kernel.org/stable/c/f7d92313002b2d543500cc417d8079aaed1fb0a8

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