🛡️ CVE-2022-50043 on Debian — linux

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: net: fix potential refcount leak in ndisc_router_discovery() The issue happens on specific paths in the function. After both the object rt and neigh are grabbed successfully, when lifetime is nonzero but the metric needs change, the function just deletes the route and set rt to NULL. Then, it may try grabbing rt and neigh again if above conditions hold. The function simply overwrite neigh if succeeds or returns if fails, without decreasing the reference count of previous neigh. This may result in memory leaks. Fix it by decrementing the reference count of neigh in place.

Distribution advisory

This page covers CVE-2022-50043 as tracked by Debian, for the package linux. The fix is available in version 6.0.2-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

DEBIAN-CVE-2022-50043 is recorded against 1 package.

linux (fixed in 6.0.2-1)

Timeline and source

Published on 18 June 2025 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2022-50043 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Base record Ubuntu

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2025-06-18

Updated 2026-08-11

Modified 2026-08-04

Fix URL N/A

Affected Packages

Software	From version	Fixed in
linux	—	6.0.2-1

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2022-50043

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