CVE-2025-21634

In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: remove kernfs active break A warning was found: WARNING: CPU: 10 PID: 3486953 at fs/kernfs/file.c:828 CPU: 10 PID: 3486953 Comm: rmdir Kdump: loaded Tainted: G RIP: 0010:kernfsshoulddrainopenfiles+0x1a1/0x1b0 RSP:...

UBUNTU-CVE-2025-21634

In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: remove kernfs active break A warning was found: WARNING: CPU: 10 PID: 3486953 at fs/kernfs/file.c:828 CPU: 10 PID: 3486953 Comm: rmdir Kdump: loaded Tainted: G RIP: 0010:kernfsshoulddrainopenfiles+0x1a1/0x1b0 RSP:...

CVE-2025-21634 cgroup/cpuset: remove kernfs active break

In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: remove kernfs active break A warning was found: WARNING: CPU: 10 PID: 3486953 at fs/kernfs/file.c:828 CPU: 10 PID: 3486953 Comm: rmdir Kdump: loaded Tainted: G RIP: 0010:kernfsshoulddrainopenfiles+0x1a1/0x1b0 RSP:...

CVE-2025-21634

CVE-2025-21634 concerns the Linux kernel cpuset/cgroup path where kernfs active protection can be broken during concurrent cpuset writes, triggering a warning and potential deadlock risk. The root cause involved a sequence of hotplug-related changes that async/sync cpuset processing and previousl...