CVE-2026-80820

In the Linux kernel, the following vulnerability has been resolved: xfs: don't livelock in scrub on a circular unlinked list LOLLM points out that online fsck can livelock if an unlinked inode list contains a loop. Use a bitmap to detect cycles.

Package Linux Kernel
Published 2026-09-04
Last modified 2026-09-04
Patch available
Yes

Affected versions

Linux kernel versions 4.15 and later are affected. Fixed in 6.12.106, 6.18.47, 7.1.11, 7.2 and their respective stable series.

Affected from
≥ 4.15
Fixed in
✓ 6.12.106 6.12.x ✓ 6.18.47 6.18.x ✓ 7.1.11 7.1.x ✓ 7.2

References

4 total

Frequently asked questions

  • What is CVE-2026-80820?

    CVE-2026-80820 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.15 onward and has been patched in 6.12.106, 6.18.47, 7.1.11 and others. CVE-2026-80820 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-80820?

    Yes. CVE-2026-80820 has been patched. Fixed versions include 6.12.106, 6.18.47, 7.1.11 and others. If you are running Linux kernel 4.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-80820 actively exploited?

    No. CVE-2026-80820 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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