Resource exhaustion in Linux kernel - CVE-2026-43292
Published: May 9, 2026
Vulnerability identifier: #VU130887
CSH Severity: Low
CVSSv4.0: 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-2026-43292
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource management in kasan_release_vmalloc_node when freeing KASAN shadow pages during vmalloc cleanup. A local user can trigger processing of a large purge list to cause a denial of service.
The issue occurs when CONFIG_PAGE_OWNER is enabled, and processing many vmap_area entries without yielding can lead to prolonged RCU stalls and potential OOM conditions.
Remediation
Install security update from vendor's repository.