CVE-2026-52961

In the Linux kernel, the following vulnerability has been resolved: ceph: fix BUGON in cephbuildxattrsblob due to stale blob size The generic/642 test-case can reproduce the kernel crash: 40243.605254 ------------ cut here ------------ 40243.605956 kernel BUG at fs/ceph/xattr.c:918! 40243.607142...

CVE-2026-52961

The CVE-2026-52961 entry describes a race in the Linux kernel Ceph xattr handling. Root cause: during __build_xattrs_blob(), the required_blob_size computation happens before __build_xattrs(), while __build_xattrs() may release and reacquire i_ceph_lock, allowing a newer MDS-provided blob to repl...