Riskcovery

CVE-2026-98960

btrfs: don't stash io_uring encoded data across -EAGAIN

State
Published
Severity
Not scored
Published
Oct 23, 2026
Updated
Oct 23, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

btrfs: don't stash io_uring encoded data across -EAGAIN

Returning -EAGAIN while leaving btrfs_uring_encoded_data in the cmd PDU leaks if the request is cancelled or the ring exits before reissue. io_uring does not free driver PDU allocations on cleanup.

Write: io_queue_sqe() always issues with IO_URING_F_NONBLOCK first, so return -EAGAIN before allocating and free data on every exit.

Read: free on nowait -EAGAIN too; only -EIOCBQUEUED keeps the allocation for btrfs_uring_read_finished().

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 34310c442e175f286b4c06ab5caa4e0b267ea31c to before 4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83eAffected
  • 34310c442e175f286b4c06ab5caa4e0b267ea31c to before 51562a8cb11628d3a5e105b4c347ec5473e5745fAffected
LinuxLinux
  • 6.13Affected
  • before 6.13Not affected
  • 7.2.11 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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