CVE-2024-40938
landlock: Fix d_parent walk
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
12 Jul 2024Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
In the Linux kernel, the following vulnerability has been resolved:
landlock: Fix d_parent walk
The WARN_ON_ONCE() in collect_domain_accesses() can be triggered when
trying to link a root mount point. This cannot work in practice because
this directory is mounted, but the VFS check is done after the call to
security_path_link().
Do not use source directory's d_parent when the source directory is the
mount point.
[mic: Fix commit message]
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/88da52ccd66e65f2e63a6c35c9dff55d448ef4dchttps://git.kernel.org/stable/c/b6e5e696435832b33e40775f060ef5c95f4fda1fhttps://git.kernel.org/stable/c/c7618c7b0b8c45bcef34410cc1d1e953eb17f8f6https://git.kernel.org/stable/c/cc30d05b34f9a087a6928d09b131f7b491e9ab11https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html