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CVE-2026-98244

btrfs: clear free space tree creation state on rebuild failure

N/A
Published: October 6, 2026 at 08:45 AM UTC
Updated: October 19, 2026 at 10:18 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: clear free space tree creation state on rebuild failure btrfs_rebuild_free_space_tree() sets BTRFS_FS_CREATING_FREE_SPACE_TREE before rebuilding the free space tree. Several error paths return without clearing this flag. The transaction restart failure path can leave the flag set on a live filesystem, causing delayed reference processing to be skipped. Clear it on all free space tree rebuild failure paths. Keep BTRFS_FS_FREE_SPACE_TREE_UNTRUSTED set, since a failed rebuild leaves the free space tree untrusted. Callers must fall back to extent-tree caching.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
6.14882af9f13e830c0a4ef696bb72cd5998a5067a93
Vendor states this is fixed in 6.14 (unaffected)
Vendor states this is fixed in 6.18.* (unaffected)
Vendor states this is fixed in 6.18.54 (unaffected)
Vendor states this is fixed in 7.2.* (unaffected)
Vendor states this is fixed in 7.2.8 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Source: cverecord
https://git.kernel.org/stable/c/a32bedab8ece9d1f90a1476a5b486a1804dc78ba
Source: cverecord
https://git.kernel.org/stable/c/b1df2997d0cd2be7bef7b4ab64ccfd1019dedc81
Source: cverecord
https://git.kernel.org/stable/c/3565893cc72cdf6b795cf6a33e7ff9605322334d

Quick Info

StatusRECEIVED

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