CVE-2024-40938

MEDIUM

Linux Kernel 5.19-6.1.94, 6.2-6.6.34, 6.7-6.9.5 - Denial of Service via Landlock d_parent Walk

Title source: llm
STIX 2.1

Description

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]

References (5)

Core 5

Scores

CVSS v3 5.5
EPSS 0.0025
EPSS Percentile 16.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

Status published
Products (15)
linux/Kernel 5.19.0 - 6.1.95linux
linux/Kernel 6.2.0 - 6.6.35linux
linux/Kernel 6.7.0 - 6.9.6linux
Linux/Linux < 5.19
Linux/Linux 5.19
Linux/Linux 6.1.95 - 6.1.*
Linux/Linux 6.10
Linux/Linux 6.6.35 - 6.6.*
Linux/Linux 6.9.6 - 6.9.*
Linux/Linux b91c3e4ea756b12b7d992529226edce1cfd854d7 - 88da52ccd66e65f2e63a6c35c9dff55d448ef4dc
... and 5 more
Published Jul 12, 2024
Tracked Since Feb 18, 2026