PT-2025-18513 · Linux+2 · Linux Kernel+2
Published
2025-05-01
·
Updated
2025-07-10
·
CVE-2022-49796
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 6.1.0-rc1-00174-g9522dc5c87da-dirty
Description
A potential null pointer dereference issue has been identified in the Linux kernel, specifically in the kprobe tracing functionality. This issue arises when the
test gen kprobe cmd() function fails after kprobe event gen cmd end(), leading to the execution of the "delete" command, which calls kprobe event delete() and releases the corresponding resource. However, the trace array in gen kretprobe test will point to the invalid resource, causing a null pointer dereference. To prevent this, gen kretprobe test should be set to NULL after calling kprobe event delete(). The issue is related to the ftrace set clr event nolock() function and can cause a kernel crash.Recommendations
To resolve this issue, update the Linux kernel to a version that includes the fix for this issue.
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
Astra Linux
Linux Kernel
Suse