PT-2025-18636 · Linux+1 · Linux Kernel+1

Published 2025-05-01 · Updated 2025-05-02 · CVE-2022-49919

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue concerns a use-after-free (UAF) bug in the Linux kernel's netfilter nf tables component. This UAF is triggered by races with the netlink notifier. The problem arises because the flow rule object is released from the commit path, but it is accessed from the control plane only, with no packets walking over this object.

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

Exploit

Use After Free

Race Condition

Weakness Enumeration

CWE-416

CWE-362

Related Identifiers

BDU:2026-06051

CVE-2022-49919

Affected Products

Astra Linux

Linux Kernel

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49919.json · Exploit
• https://git.kernel.org/stable/c/74fd5839467054cd9c4d050614d3ee8788386171 · Patch
• https://git.kernel.org/stable/c/6044791b7be707fd0e709f26e961a446424e5051 · Patch
• https://git.kernel.org/stable/c/26b5934ff4194e13196bedcba373cd4915071d0e · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49919 · Vendor Advisory
• https://git.kernel.org/stable/c/b2d7a92aff0fbd93c29d2aa6451fb99f050e2c4e · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49919 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06051 · Security Note
• https://git.kernel.org/stable/c/4ab6f96444e936f5e4a936d5c0bc948144bcded3 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49919 · Security Note
• https://ubuntu.com/security/CVE-2022-49919 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49919 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49919 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49919 · Vendor Advisory
• https://twitter.com/CVEnew/status/1917950797901648368 · Twitter Post