CVE-2026-80729

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: initialise workingset state before folio split xas_try_split() adds __GFP_ACCOUNT for page-cache xa_nodes, but __folio_split() leaves the xa_state's xa_lru unset. That lets a live, memcg-charged xa_node exist without being linked into the mapping's shadow_nodes list_lru; when reclaim later walks the list_lru it trips VM_WARN_ON(!css_is_dying()). Use mapping_set_update() to install both the workingset update callback and the shadow_nodes list_lru on the xa_state.

Package Linux Kernel
Published 2026-09-03
Last modified 2026-09-03
Patch available
Yes

Affected versions

Linux kernel versions 6.15 and later are affected. Fixed in 7.1.9, 7.2 and their respective stable series.

Affected from
≥ 6.15
Fixed in
✓ 7.1.9 7.1.x ✓ 7.2

References

2 total

Frequently asked questions

  • What is CVE-2026-80729?

    CVE-2026-80729 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.15 onward and has been patched in 7.1.9 and 7.2. CVE-2026-80729 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-80729?

    Yes. CVE-2026-80729 has been patched. Fixed versions include 7.1.9 and 7.2. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-80729 actively exploited?

    No. CVE-2026-80729 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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