CVE-2022-47929
MEDIUMLinux Kernel < 6.1.6 - Denial of Service via Traffic Control Configuration
Title source: llmDescription
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 (7)
Core 7
Core References
Mailing List, Patch, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
Patch, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407
Third Party Advisory
https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
Exploit, Mailing List, Third Party Advisory
https://www.spinics.net/lists/netdev/msg555705.html
Third Party Advisory vendor-advisory
https://www.debian.org/security/2023/dsa-5324
Mailing List mailing-list
https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
Mailing List mailing-list
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
Scores
CVSS v3
5.5
EPSS
0.0004
EPSS Percentile
11.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-476
Status
published
Products (2)
debian/debian_linux
11.0
linux/linux_kernel
< 6.1.6
Published
Jan 17, 2023
Tracked Since
Feb 18, 2026