Improper Initialization in Linux kernel - CVE-2026-31492
Published: April 24, 2026
Vulnerability identifier: #VU127650
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-2026-31492
CWE-ID: CWE-665
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 improper initialization in irdma_create_qp and irdma_destroy_qp when handling a failure from ib_copy_to_udata during queue pair creation. A local user can trigger an error during queue pair creation to cause a denial of service.
How to mitigate CVE-2026-31492
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/11a95521fb93c91e2d4ef9d53dc80ef0a755549b
- https://git.kernel.org/stable/c/3cb88c12461b71c7d9c604aa2e6a9a477ecfa147
- https://git.kernel.org/stable/c/ac1da7bd224d406b6f1b84414f0f652ab43b6bd8
- https://git.kernel.org/stable/c/af310407f79d5816fc0ab3638e1588b6193316dd
- https://git.kernel.org/stable/c/cd1534c8f4984432382c240f6784408497f5bb0a
- https://git.kernel.org/stable/c/f72996834f7bdefc2b95e3eec30447ee195df44e