CVE-2024-53137: ARM: fix cacheflush with PAN

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-12-04 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: ARM: fix cacheflush with PAN It seems that the cacheflush syscall got broken when PAN for LPAE was implemented. User access was not enabled around the cache maintenance instructions, causing them to fault.

Affected products

Linux kernel: from 6.10 before 6.11.10; 6.12-rc1, 6.12-rc2, 6.12-rc3, 6.12-rc4, 6.12-rc5, 6.12-rc6 (+1) — fixed in 6.11.10

How to fix

Upgrade to a fixed version: Linux kernel 6.11.10. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/ca29cfcc4a21083d671522ad384532e28a43f033
https://git.kernel.org/stable/c/e6960a2ed49c9a25357817535f7cc50594a58604

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