CVE-2026-80533
CVE-2026-80533: 1 tracked advisory record across Red Hat. Compare vendor sources.
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Red Hat
1 advisory- Advisory severityMedium5.5
Medium [CVE-2026-80533] don't walk off the end of a null sc->sa.agi_bp in AGI repair
CVE-2026-80533Source published Source updated
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. This vulnerability occurs during the Allocation Group Information (AGI) repair process, specifically in the `xrep_iunlink_walk_ondisk_bucket` function. If the buffer verifier fails, a null pointer dereference can occur when attempting to rebuild unlinked inode lists, potentially leading to a system crash and a Denial of Service (DoS). Red Hat severity: Low — CVSS 5.5…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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