Vulnerability Details : CVE-2022-47929
Potential exploit
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2022-47929
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-47929
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 28 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-47929
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2022-47929
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-47929
-
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
[SECURITY] [DLA 3403-1] linux security update
-
https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
[SECURITY] [DLA 3349-1] linux-5.10 security update
-
https://tldp.org/HOWTO/Traffic-Control-HOWTO/components.html
Components of Linux Traffic ControlThird Party Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
-
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6
Mailing List;Patch;Vendor Advisory
-
https://www.spinics.net/lists/netdev/msg555705.html
noqueue qdisc and non-virtual interfaces — NetdevExploit;Mailing List;Third Party Advisory
-
https://www.debian.org/security/2023/dsa-5324
Debian -- Security Information -- DSA-5324-1 linuxThird Party Advisory
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