PT-2024-21478 · Linux+4 · Linux Kernel+4
Published
2024-02-01
·
Updated
2025-03-27
·
CVE-2024-26703
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.6.13-200.fc39.x86 64
Description
The vulnerability is related to the tracing/timerlat module in the Linux kernel. The issue arises when the timerlat's hrtimer is initialized at the first read of timerlat fd and destroyed at close. If a user program opens and closes the file without reading, it causes an error. This can lead to a kernel NULL pointer dereference.
To exploit this vulnerability, an attacker would need to create a scenario where the timerlat fd is opened and closed without reading, which could potentially lead to a denial-of-service (DoS) condition or other unintended behavior.
Recommendations
To resolve this issue, update the Linux kernel to a version where the hrtimer init is moved to timerlat fd open(), avoiding the error caused by opening and closing the file without reading.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu