CVE-2022-47929: Debian Linux

Medium severity, CVSS 5.5. EPSS: 1% chance of exploitation in the next 30 days.

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.

Affected products

  • Debian Debian Linux: version 11.0 only
  • Linux Linux Kernel: before 6.1.6 (fixed in 6.1.6)

Published 2023-01-17. Last modified 2026-06-17.