PT-2025-25930 · Linux+2 · Linux Kernel+2

Published 2022-08-17 · Updated 2025-06-19 · CVE-2022-50004

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base 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 5.19.0+

Description A null pointer dereference issue has been identified in the Linux kernel, specifically in the xfrm interface. This issue occurs when transmitting an skb with metadata dst attached, resulting in a null pointer dereference in the xfrmi xmit2() function. The problem arises from the unconditional dereference of dst->dev when there is no policy. To fix this, a check for a null dst orig->dev has been added.

Recommendations For Linux kernel versions prior to 5.19.0+, update to version 5.19.0 or later to resolve the issue. As a temporary workaround, consider disabling the xfrmi xmit2() function until a patch is available. Restrict access to the xfrm interface to minimize the risk of exploitation. Avoid using the dst->dev variable in the affected API endpoint until the issue is resolved.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-04560

CVE-2022-50004

RHSA-2023:6583

RHSA-2023_6583

Affected Products

Astra Linux

Linux Kernel

Red Hat

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50004.json · Exploit
• https://git.kernel.org/stable/c/96f2758a6d028d1ac08616de9c3c7ff2a122ecf1 · Patch
• https://ubuntu.com/security/CVE-2022-50004 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04560 · Security Note
• https://git.kernel.org/stable/c/17ecd4a4db4783392edd4944f5e8268205083f70 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-50004 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50004 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50004 · Vendor Advisory
• https://git.kernel.org/stable/c/2761612bcde9776dd93ce60ce55ef0b7c7329153 · Patch
• https://git.kernel.org/stable/c/e26d676c1f9f335510780b566a10475c47ce03d0 · Patch
• https://osv.dev/vulnerability/CVE-2022-50004 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50004 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50004 · Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2022-50004 · Note
• https://lore.kernel.org/linux-cve-announce/2025061829-CVE-2022-50004-88ff@gregkh/T · Note