Improper handling of exceptional conditions in Linux kernel - CVE-2026-31439
Published: April 24, 2026
Vulnerability identifier: #VU127706
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-2026-31439
CWE-ID: CWE-755
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 exception handling in the xdma driver regmap initialization logic when initializing mmio regmap access. A local user can trigger the vulnerable initialization path to cause a denial of service.
How to mitigate CVE-2026-31439
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/4b6e1da50b22e5528b9003f376a3cecccce4decc
- https://git.kernel.org/stable/c/59f6ccd0f3345be2e8a78bdef2103e93f180633a
- https://git.kernel.org/stable/c/9787b3d9b908785b40bc3f2e6d7082fdb8fdd98a
- https://git.kernel.org/stable/c/e0adbf74e2a0455a6bc9628726ba87bcd0b42bf8
- https://git.kernel.org/stable/c/f27197ccfd2ecd2c71f27fd57c6d507e892ad24d