CVE-2026-98963
kernel: btrfs: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 23, 2026
Updated · October 29, 2026
Description
A flaw was found in the Btrfs file system within the Linux kernel. During asynchronous read operations, an early I/O error can cause both the direct and deferred error handling paths to release the same resources. This double-free condition can be exploited by a local user to corrupt memory and cause a system crash, leading to a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-1341 · Multiple Releases of Same Resource or Handle