PT-2025-41021 · Linux+4 · Linux Kernel+4
Published
2022-08-15
·
Updated
2026-03-14
·
CVE-2022-50516
CVSS v2.0
6.0
Medium
| Vector | AV:L/AC:H/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the Distributed Lock Manager (DLM) component. Specifically, an invalid dereference of
sb lvbptr can occur when handling lock blocks on the stack, potentially leading to a kernel crash. The issue arises when sb lvbptr points to a dangling pointer while not using DLM LKF VALBLK. The fix involves adding a check for the DLM LKF VALBLK flag during the copying of the lvbptr array, ensuring that a non-null sb lvbptr value is always provided. This could potentially affect other DLM users depending on how they handle memory initialization and freeing of sb lvbptr.Recommendations
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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Related Identifiers
Affected Products
Centos
Debian
Linux Kernel
Red Hat
Suse