PT-2025-44110 · Linux+3 · Linux Kernel+3
Published
2025-10-01
·
Updated
2026-05-07
·
CVE-2025-40042
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a race condition in kprobe initialization that can lead to a NULL pointer dereference and kernel crash. This occurs between kprobe activation and perf events initialization. Specifically, a race condition exists where one CPU core may enable kprobe functionality before another core initializes the
perf events list, leading to a crash when the second core attempts to access a NULL pointer. The crash occurs within the kprobe perf func function when attempting to read from an uninitialized perf events structure. The issue is related to the trace kprobe.c file and the kprobe perf func function.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
Debian
Linuxmint
Linux Kernel
Ubuntu