SB2026082442 - Improper resource shutdown or release in Linux kernel btrfs
Published: August 24, 2026
Security Bulletin ID
SB2026082442
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper resource shutdown or release (CVE-ID: CVE-2026-74722)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in btrfs_do_encoded_write() when handling crafted Btrfs encoded write ioctl requests. A local user can invoke the encoded write ioctl to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0f0da96ccb1b9f35f4d3d4540dcaab0969d9d6b0
- https://git.kernel.org/stable/c/20c0eeb4313f9f89d47b80b672b5846f9827cb31
- https://git.kernel.org/stable/c/24a8f2c29aebb753ccb962fbb25bae18d7978f6e
- https://git.kernel.org/stable/c/60b50ceba6243802f8d2c0a9a7c2d549a93b1d64
- https://git.kernel.org/stable/c/d2a4e4e626b2f4670b69b430c357f03f53eb6632
- https://git.kernel.org/stable/c/e2c7e88815edd5ecfb88e7660ab9fd42bda6bc47