Improper resource shutdown or release in Linux kernel - CVE-2026-74722
Published: August 24, 2026
Vulnerability identifier: #VU144604
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-74722
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-74722
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1
External 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