Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-99172
Published: October 29, 2026
Vulnerability identifier: #VU158418
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-99172
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to exhaust kernel resources and potentially cause a denial of service.
The vulnerability exists due to improper release of long-term mount resources in create_ipc_ns() when IPC namespace initialization fails after creating the mqueue mount. A local user can trigger affected initialization failure paths to leak mqueue mounts and their superblocks, potentially exhausting kernel resources and causing a denial of service.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-99172
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.117-1
linux (Debian package) - update to 6.12.117-1