CVE-2026-45895

A flaw was found in the Linux kernel. A local attacker could exploit a livelock condition between the quotactl and freezesuper operations. This occurs when a filesystem is frozen and the quotactlblock function enters a retry loop, preventing the system from reaching an RCU Read-Copy Update...

CVE-2026-45895

Mode C: The CVE-2026-45895 issue affects the Linux kernel quota handling when a filesystem is frozen. quotactl_block() retries while the freezer holds SB_FREEZE_WRITE, leading to a livelock with synchronize_rcu() and causing a freezer hang and 100% CPU on the quota task. The documented fix adds c...