CVE-2022-47929

Medium

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.

SeverityMedium

CVSS5.5

Exploit probability—

Product

Linux Kernel

PublishedJan 17, 2023

First seenJan 17, 2023

Weakness typeCWE-476NULL pointer dereference

How to fix

Update

linux linux_kernel6.1.6 or later

Vendor advisories

debian.org/security/2023/dsa-5324

Affected products

Product	Affected versions	Fixed in
linux linux_kernel	v < 6.1.6	6.1.6
debian debian_linux	11.0	—

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