CVE-2026-80533 PUBLISHED

xfs: don't walk off the end of a null sc->sa.agi_bp in AGI repair

Assigner: Linux
Reserved: 26.08.2026 Published: 26.08.2026 Updated: 26.08.2026

In the Linux kernel, the following vulnerability has been resolved:

xfs: don't walk off the end of a null sc->sa.agi_bp in AGI repair

LOLLM noticed a longstanding bug where xrep_iunlink_walk_ondisk_bucket tries to walk ragi->sc->sa.agi_bp to rebuild the unlinked inode lists. Unfortunately, it's possible for agi_bp to be null if the buffer verifier fails, so we have to use ragi->agi_bp (which skips verifier checks) instead.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from ab97f4b1c030750f2475bf4da8a9554d02206640 to 43b4ecbc948a2e441804c9d7b772deb6b2e44e3d (excl.)
  • affected from ab97f4b1c030750f2475bf4da8a9554d02206640 to c36d7f68f1c2e7e528ad11044a0bd6a3016a6a03 (excl.)
  • affected from ab97f4b1c030750f2475bf4da8a9554d02206640 to a6cfd0e4bb1e5f4dd2a67fa99eab36bda47cf081 (excl.)
  • affected from ab97f4b1c030750f2475bf4da8a9554d02206640 to 1e96a00e0d3a00be6e4f368b2f18e2d345f813ce (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.10 is affected
  • unaffected from 0 to 6.10 (excl.)
  • unaffected from 6.12.105 to 6.12.* (incl.)
  • unaffected from 6.18.46 to 6.18.* (incl.)
  • unaffected from 7.1.10 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References