Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-64466
Published: July 27, 2026
Vulnerability identifier: #VU139480
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64466
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource management in the rust binder freeze listener handling when dropping the last reference to a node without clearing its freeze listener. A local user can drop the node reference while leaving a stale freeze listener registered to cause a denial of service.
The issue can leave the listener in both the freeze_listeners rbtree and the remote node's freeze listener list, potentially creating a refcount cycle that results in a memory leak.
Affected software
Linux kernel
How to mitigate CVE-2026-64466
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3