arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array

Summary

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).

Timeline

1. Feb 27, 2025, 2:18 AM UTCCVE published
2. Oct 15, 2026, 9:42 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. Oct 15, 2026, 9:51 PM UTCRecord last updated

Affected versions

• Linux Linux

  From 5d425c18653731af62831d30a4fa023d532657a9 · fixed in 4371ac7b494e933fffee2bd6265d18d73c4f05aa; From 5d425c18653731af62831d30a4fa023d532657a9 · fixed in e4fde33107351ec33f1a64188612fbc6ca659284; From 5d425c18653731af62831d30a4fa023d532657a9 · fixed in 88a3e6afaf002250220793df99404977d343db14; From 5d425c18653731af62831d30a4fa023d532657a9 · fixed in 4ff25f0b18d1d0174c105e4620428bcdc1213860; From 5d425c18653731af62831d30a4fa023d532657a9 · fixed in ab90894f33c15b14c1cee6959ab6c8dcb09127f8; From 5d425c18653731af62831d30a4fa023d532657a9 · fixed in 715eb1af64779e1b1aa0a7b2ffb81414d9f708e5; From 5d425c18653731af62831d30a4fa023d532657a9 · fixed in 67b99a2b5811df4294c2ad50f9bff3b6a08bd618; From 5d425c18653731af62831d30a4fa023d532657a9 · fixed in 875d742cf5327c93cba1f11e12b08d3cce7a88d2

• Linux Linux

  4.0

• KernelLinux

  From 4.0.0 · fixed in 5.4.291; From 5.5.0 · fixed in 5.10.235; From 5.11.0 · fixed in 5.15.179; From 5.16.0 · fixed in 6.1.129; From 6.2.0 · fixed in 6.6.79; From 6.7.0 · fixed in 6.12.16; From 6.13.0 · fixed in 6.13.4

References 8