CVE-2026-98961

In the Linux kernel, the following vulnerability has been resolved: btrfs: unlock inode and extent in caller when io_uring read extent fails btrfs_uring_read_extent() runs only after btrfs_encoded_read() has taken the inode shared lock and the extent lock. On failure it used to unlock in out_fail, and a pages-array allocation failure returned -ENOMEM without unlocking at all. Unlock in the caller instead on all failure returns, matching the copy_to_user() error path. The deferred -EIOCBQUEUED path still unlocks in btrfs_uring_read_finished().

Package Linux Kernel
Published 2026-10-23
Last modified 2026-10-23
Patch available
Yes

Affected versions

Linux kernel versions 6.13 and later are affected. Fixed in 6.18.57, 7.2.11, 7.3 and their respective stable series.

Affected from
≥ 6.13
Fixed in
✓ 6.18.57 6.18.x ✓ 7.2.11 7.2.x ✓ 7.3

References

3 total

Frequently asked questions

  • What is CVE-2026-98961?

    CVE-2026-98961 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.13 onward and has been patched in 6.18.57, 7.2.11 and 7.3. CVE-2026-98961 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-98961?

    Yes. CVE-2026-98961 has been patched. Fixed versions include 6.18.57, 7.2.11 and 7.3. If you are running Linux kernel 6.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-98961 actively exploited?

    No. CVE-2026-98961 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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