PT-2025-22210 · Linux+6 · Linux Kernel+6
Marek
·
Published
2025-05-07
·
Updated
2026-05-26
·
CVE-2025-37949
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 (affected versions not specified)
Description
A NULL pointer fault was reported in the xenbus thread callstack. The issue occurs when the
req object is freed while the xenbus thread is still using it, causing a kernel NULL pointer dereference. This happens because req->cb is set to xs wake up(), which can cause an immediate reschedule, allowing other processes to run before wake up returns. The problem is resolved by using two krefs on each request, one for the caller and one for xenbus thread, to track the request lifetime.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Improper Locking
NULL Pointer Dereference
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Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu