PT-2025-38422 · Linux+4 · Linux Kernel+4

Published 2022-12-12 · Updated 2025-10-31 · CVE-2022-50405

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base 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 A race condition exists in the VXLAN implementation when deleting a VXLAN device during packet reception. This can lead to a NULL pointer dereference within the vxlan ecn decapsulate() function if the socket is released after vxlan sock is obtained from sk user data. The issue occurs when deleting a VXLAN device while packets are being received, potentially leading to system instability.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Resource Release

NULL Pointer Dereference

Weakness Enumeration

CWE-404

CWE-476

Related Identifiers

ALSA-2025_16880

BDU:2026-02440

CESA-2023_7077

CVE-2022-50405

OESA-2025-2553

RHSA-2023:2458

RHSA-2023:7077

RHSA-2023_2458

RHSA-2023_7077

SUSE-SU-2025:03614-1

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

Suse

References · 451

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50405.json · Exploit
• https://bdu.fstec.ru/vul/2026-02440 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-53728 · Security Note
• https://osv.dev/vulnerability/CVE-2022-50405 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50405 · Vendor Advisory
• https://git.kernel.org/stable/c/303000c793f705d07b551eb7c1c27001c5b33c8d · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-50544 · Security Note
• https://git.kernel.org/stable/c/588d0b8462f5ffed3e677e65639825b2678117ab · Patch
• https://git.kernel.org/stable/c/3cf7203ca620682165706f70a1b12b5194607dce · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-50494 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-50566 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50405 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-38729 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-39817 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-50470 · Security Note