CVE-2026-45942

In the Linux kernel, the following vulnerability has been resolved: ext4: fix e4b bitmap inconsistency reports A bitmap inconsistency issue was observed during stress tests under mixed huge-page workloads. Ext4 reported multiple e4b bitmap check failures like: ext4mbcomplexscangroup:2508: group...

CVE-2026-45942

Summary of CVE-2026-45942 : A race condition in the Linux kernel ext4 bitmap handling enables inconsistent bitmap reporting due to concurrent page migration and bitmap modification in the load_buddy path. The root cause is that the fast load_buddy path only increments the folio refcount and can o...