Race condition in Linux kernel - CVE-2026-89719
Published: September 12, 2026
Vulnerability identifier: #VU149085
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89719
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform an out-of-bounds access.
The vulnerability exists due to a race condition in read_block_state() when reading block state information while a zram device is reset and reinitialized with a smaller disk size. A local user can read block state information during this condition to perform an out-of-bounds access.
Affected software
Linux kernel
How to mitigate CVE-2026-89719
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3