CVE-2025-68239

A flaw was found in the binfmt_misc subsystem of the Linux kernel. When bm_register_write() encounters an error after opening an executable file via open_exec(), it closes the file without restoring write access permissions. This leaves the file in a write-denied state, causing subsequent write operations on that file to fail unexpectedly.

This bug affects file permission state handling rather than security boundaries. The impact is limited to denial of write access on specific files after binfmt_misc registration errors, which is a reliability issue rather than a security vulnerability.

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.