CVE-2026-64426

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A memory leak occurs in the io uring/nop component when handling file references. The issue arises when a NOP request is submitted with the IOSQE FIXED FILE flag set but without the IORING NOP FIXED FILE flag. In this scenario, the io nop() function follows the normal path and acquires a file reference via io file get normal(). However, because REQ F FIXED FILE is set, the io put file() function fails to release the reference upon completion, leading to a leak of the file object.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.