NULL pointer dereference in Linux Kernel
CVE-2022-47929
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (60.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.spinics.net/lists/netdev/msg555705.html (Exploit, Mailing List, Third Party Advisory)
- tldp.org/HOWTO/Traffic-Control-HOWTO/components.html (Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.6 (Patch, Mailing List, Vendor Advisory)
- www.debian.org/security/2023/dsa-5324 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/03/msg00000.html (mailing-list)
- lists.debian.org/debian-lts-announce/2023/05/msg00006.html (mailing-list)
Frequently asked questions
- What is CVE-2022-47929?
- CVE-2022-47929 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-01-17.
- How severe is CVE-2022-47929?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2022-47929 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.