CVE-2022-47929 Null dereference in n/a

What is CVE-2022-47929?

CVE-2022-47929 is a medium-severity vulnerability in Debian Debian Linux, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands. This affects qdisc_graft in net/sched/sch_api.c.

Weakness: CWE-476

Which versions are affected by CVE-2022-47929?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2022-47929?

Upgrade to a fixed version.

Is CVE-2022-47929 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-47929 exists.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-13050, AZL-13123, DEBIAN-CVE-2022-47929, GHSA-cmq9-w454-24mf, UBUNTU-CVE-2022-47929.