Race condition in Linux kernel - CVE-2026-53153
Published: June 26, 2026
Vulnerability identifier: #VU135637
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-53153
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause memory corruption.
The vulnerability exists due to a race condition in memcg_reparent_list_lrus() in mm/list_lru.c when reparenting list lru entries for a dying memory cgroup during concurrent list_lru operations. A local user can trigger concurrent list_lru activity to cause memory corruption.
The issue occurs because different threads may modify the same physical list under different per-node locks during the reparenting window.
Affected software
Linux kernel
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
kernel (Red Hat package)
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
kernel (Red Hat package)
How to mitigate CVE-2026-53153
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
kernel (Red Hat package) - update to 6.12.0-211.50.1.el10_2
kernel (Red Hat package) - update to 6.12.0-211.50.1.el10_2