CVE-2026-98984
kernel: dcache: don't put a mountpoint on a dentry that's being removed
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 23, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's Virtual File System (VFS) directory cache component. A local user could exploit a race condition between moving a mount and concurrently removing a directory, causing a mountpoint to attach to a directory entry being deleted. Because the kernel cannot detach mounts from removed directories, this issue can lead to an un-detachable mount, resulting in resource exhaustion and a Denial of Service (DoS).
CVSS score applicability
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.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE-366 · Race Condition within a Thread