Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-31634
Published: April 25, 2026
Vulnerability identifier: #VU127768
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-31634
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a reference count leak in rxrpc_server_keyring() when handling RxRPC server keyring setup. A local user can trigger the vulnerable code path to cause a denial of service.
How to mitigate CVE-2026-31634
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/12de9e0e0b0b7058be7dfb8a5927eb565bc25780
- https://git.kernel.org/stable/c/139c750bf06649097d98b0bc41e2a678b4627e27
- https://git.kernel.org/stable/c/8ee931c3cd97f1c42b4fbf057f04b9dae45dfb7a
- https://git.kernel.org/stable/c/9ce36d28f67c2a477a7e2f03480de3f6783fb363
- https://git.kernel.org/stable/c/c6d9ea26cf8756ad6f162578e94a5f82f6fae3c2
- https://git.kernel.org/stable/c/f125846ee79fcae537a964ce66494e96fa54a6de
- https://git.kernel.org/stable/c/fc76d0bd00850b7372f0a4a319c0c60f80487632