Bug 2524486 (CVE-2026-80533) - CVE-2026-80533 kernel: xfs: don't walk off the end of a null sc->sa.agi_bp in AGI repair
Summary: CVE-2026-80533 kernel: xfs: don't walk off the end of a null sc->sa.agi_bp in...
Keywords:
Status: NEW
Alias: CVE-2026-80533
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-26 14:59 UTC by OSIDB Bzimport
Modified: 2026-08-26 17:16 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-26 14:59:58 UTC 
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.
Comment 1 Mauro Matteo Cascella 2026-08-26 17:12:20 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082604-CVE-2026-80533-0138@gregkh/T
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