Improper resource shutdown or release in Linux kernel - CVE-2026-74448
Published: August 16, 2026
Vulnerability identifier: #VU143331
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74448
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 pqm_create_queue() when handling a failure during the first queue creation for a process with MES enabled. A local user can trigger queue creation failures to cause a denial of service.
Only systems with MES enabled are vulnerable, and the issue occurs when kernel memory allocation fails during the first queue creation for a process.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-74448
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/2ff5bb3645c72b3690e70c513a62a86600c4632f
- https://git.kernel.org/stable/c/38b73293f38658a4685ffcea666462024f858ad9
- https://git.kernel.org/stable/c/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3
- https://git.kernel.org/stable/c/7c35bf94150d872e670a6632aa819d320279effb
- https://git.kernel.org/stable/c/8924e2594a15bdbd07f8696770864366d787ab70