CVE-2025-21785

In the Linux kernel, the following vulnerability has been resolved: arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array The loop that detects/populates cache information already has a bounds check on the array size but does not account for cache levels with separate data/instructions cache. Fix this by incrementing the index for any populated leaf (instead of any populated level).

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2025-02-27

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/4371ac7b494e933fffee2bd6265d18d73c4f05aa
• https://git.kernel.org/stable/c/4ff25f0b18d1d0174c105e4620428bcdc1213860
• https://git.kernel.org/stable/c/67b99a2b5811df4294c2ad50f9bff3b6a08bd618
• https://git.kernel.org/stable/c/715eb1af64779e1b1aa0a7b2ffb81414d9f708e5
• https://git.kernel.org/stable/c/875d742cf5327c93cba1f11e12b08d3cce7a88d2

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