CVE-2026-89835

A flaw was found in the Linux kernel's f2fs filesystem. This vulnerability occurs when the checkpoint_merge feature is enabled without an active checkpoint merge thread, such as during a read-only mount. A local attacker with write access to ckpt_thread_ioprio through sysfs could trigger a null pointer dereference, leading to a system crash and a denial of service.

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.