Improper handling of exceptional conditions in Linux kernel - CVE-2026-46290
Published: June 10, 2026
Vulnerability identifier: #VU134240
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-2026-46290
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 exceptional-condition handling in efi_crash_gracefully_on_page_fault() when processing EFI runtime service calls that trigger page faults. A local user can trigger a page fault during an EFI runtime service call to cause a denial of service.
Only systems with buggy firmware that triggers page faults during EFI runtime calls are affected.
How to mitigate CVE-2026-46290
Install security update from vendor's repository.