Improper Check for Unusual or Exceptional Conditions in Linux kernel - CVE-2026-53282
Published: June 29, 2026
Vulnerability identifier: #VU135756
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-2026-53282
CWE-ID: CWE-754
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 handling of a missing return address in x86 kexec purgatory code when processing a non-kjump kexec. A local user can trigger a non-kjump kexec to cause a denial of service.
The issue can cause purgatory to crash by attempting to access a return address above the top of its stack.
How to mitigate CVE-2026-53282
Install security update from vendor's repository.