Use-after-free in Linux kernel - CVE-2026-64468
Published: July 27, 2026
Vulnerability identifier: #VU139464
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64468
CWE-ID: CWE-416
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 use-after-free in binder_free_transaction() when freeing binder transactions. A local user can trigger a race condition involving a binder transaction to cause a denial of service.
The issue occurs because the target process can be freed after its reference is read and before its inner lock is acquired.
Affected software
Linux kernel
How to mitigate CVE-2026-64468
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/0be901ab1dcc4af59b88f2e324493bb283850167
- https://git.kernel.org/stable/c/0f15f0f6ca5df566275ce517f257af2559528b41
- https://git.kernel.org/stable/c/328ccf32acb87e8bbb1fe2b065068c574e4db2bf
- https://git.kernel.org/stable/c/45df558c543bb5543bacc8065fd7c567740781e5
- https://git.kernel.org/stable/c/48aeda9f8039e4a6971d1804578efde7f2c01eda
- https://git.kernel.org/stable/c/5602a43f251c3d75312df91a422675fc00ca3dce
- https://git.kernel.org/stable/c/d45ef513eed1abebfec90c3cfb6ae50c2a4182db
- https://git.kernel.org/stable/c/f223d27a546c1e1f48d38fd67760e78f068fe8c4