CVE-2026-90342

A flaw was found in the Linux kernel. A local user could potentially trigger a deadlock within the kernel's memory management, specifically related to the mmap_lock mechanism. This issue arises when the arena_vm_fault() function attempts to retry a memory fault without correctly releasing a previously held lock, causing the mmap_lock to be acquired redundantly. This could lead to a system-wide Denial of Service (DoS), making the system unresponsive.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.