CVE-2026-43045

In the Linux kernel, the following vulnerability has been resolved: mshv: Fix error handling in mshv_region_pin The current error handling has two issues: First, pin_user_pages_fast() can return a short pin count (less than requested but greater than zero) when it cannot pin all requested pages. This is treated as success, leading to partially pinned regions being used, which causes memory corruption. Second, when an error occurs mid-loop, already pinned pages from the current batch are not properly accounted for before calling mshv_region_invalidate_pages(), causing a page reference leak. Treat short pins as errors and fix partial batch accounting before cleanup.

The following products are affected by CVE-2026-43045 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-43045.

URL	Resource
https://git.kernel.org/stable/c/a7d149152bc5a9119854331c57be35ad31fdf5cc
https://git.kernel.org/stable/c/c0e296f257671ba10249630fe58026f29e4804d9
https://lore.kernel.org/linux-cve-announce/2026050105-CVE-2026-43045-de58@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-43045
https://www.cve.org/CVERecord?id=CVE-2026-43045