CVE-2022-47929

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory debian.org Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.spinics.net/lists/netdev/msg555705.html mailing list exploit third party advisory
https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html third party advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407 patch vendor advisory
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6 mailing list patch vendor advisory
https://www.debian.org/security/2023/dsa-5324 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html mailing list
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html mailing list

Frequently Asked Questions

What is the severity of CVE-2022-47929?
CVE-2022-47929 has been scored as a medium severity vulnerability.
How to fix CVE-2022-47929?
To fix CVE-2022-47929, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-47929 being actively exploited in the wild?
It is possible that CVE-2022-47929 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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