PT-2024-31314 · Linux+3 · Linux Kernel+3
En-Wei Wu
·
Published
2024-07-29
·
Updated
2025-01-09
·
CVE-2024-44937
CVSS v2.0
7.5
High
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue arises from a race condition in the ACPI notify handler, specifically in the
intel-vbtn module, which can lead to a kernel NULL pointer dereference. This occurs when the handler attempts to register priv->switches dev twice, resulting in a duplicate filename error in sysfs and a subsequent kernel crash. The problem is triggered on Dell Venue 7140 tablets when undocking from the keyboard. To fix this, a mutex is used to protect the intel-vbtn notify handler from racing with itself.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
Race Condition
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Related Identifiers
Affected Products
Astra Linux
Linuxmint
Linux Kernel
Ubuntu