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).

References

• https://nvd.nist.gov/vuln/detail/CVE-2025-21785
• 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
• https://git.kernel.org/stable/c/ab90894f33c15b14c1cee6959ab6c8dcb09127f8
• https://git.kernel.org/stable/c/4371ac7b494e933fffee2bd6265d18d73c4f05aa
• https://git.kernel.org/stable/c/88a3e6afaf002250220793df99404977d343db14
• https://git.kernel.org/stable/c/e4fde33107351ec33f1a64188612fbc6ca659284