Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-43045
Published: May 2, 2026
Vulnerability identifier: #VU128873
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-43045
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause memory corruption.
The vulnerability exists due to improper handling of short pin counts and partial batch accounting in mshv_region_pin when pinning user pages. A local user can trigger the use of partially pinned regions to cause memory corruption.
Affected software
Linux kernel
How to mitigate CVE-2026-43045
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3