PT-2025-38426 · Linux+2 · Linux Kernel+2
Published
2022-09-26
·
Updated
2026-01-22
·
CVE-2022-50409
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 flaw exists in the Linux kernel where a NULL pointer dereference can occur within the
sk stream wait memory function. This issue arises when a socket is released while another thread is waiting for memory, specifically due to the tcp bpf send verdict function not incrementing the file count of the redirected socket. This can lead to a socket's wait queue being accessed after it has been freed, resulting in a NULL pointer dereference. The vulnerability is triggered when a socket is closed in one thread while another thread is waiting for memory, leading to a race condition.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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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Suse