CVE-2026-43045

kernel: mshv: Fix error handling in mshv_region_pin

Loading…

Severity

Unknown

Red Hat Product Security

—

CVSS

Review impact separately from score.

Published · May 1, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's mshv module. Incorrect error handling in the mshv_region_pin function can lead to memory corruption. This occurs when the pin_user_pages_fast() operation returns a partial pin count, causing the system to use incompletely pinned memory regions. This issue can also result in a page reference leak during error cleanup.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-390 · Detection of Error Condition Without Action