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.
References
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
https://www.debian.org/security/2023/dsa-5324
https://www.spinics.net/lists/netdev/msg555705.html
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
https://www.debian.org/security/2023/dsa-5324
https://www.spinics.net/lists/netdev/msg555705.html
CVSS impact metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 · Medium
CVSS V3.1
CVSS V3.0
CVSS V2.0
Information
Source identifier
Vulnerability status
Modified
Published
2023-01-17T21:15:14.590
2 years agoLast modified
2025-04-04T18:15:43.927
3 months ago