CVE-2026-80820 PUBLISHED

xfs: don't livelock in scrub on a circular unlinked list

Assigner: Linux
Reserved: 26.08.2026 Published: 04.09.2026 Updated: 04.09.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from a12890aebb895951720ff884eab1c99a30645b29 to 599453f83458b57995290a1d31200c263e2c2691 (excl.)
  • affected from a12890aebb895951720ff884eab1c99a30645b29 to 159d162fe80bd56573cafde5801bd5a90a3dd1ac (excl.)
  • affected from a12890aebb895951720ff884eab1c99a30645b29 to 56407a61a8bb85b884de802d39635abdb0ea7408 (excl.)
  • affected from a12890aebb895951720ff884eab1c99a30645b29 to 527eaaefddb6ec5c83a06c9a1559960dd6361753 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 4.15 is affected
  • unaffected from 0 to 4.15 (excl.)
  • unaffected from 6.12.106 to 6.12.* (incl.)
  • unaffected from 6.18.47 to 6.18.* (incl.)
  • unaffected from 7.1.11 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References