Medium 5.5Published Jan 16, 2023

CVE-2022-47929In 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 contr…

Updated under an hour ago (Oct 27, 2026, 10:50 AM ET)

Does this affect you?

It affects Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1	CISA ADP
linux linux_kernel linux:linux_kernel	before 6.1.6	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://www.spinics.net/lists/netdev/msg555705.html	exploit, mailing-list, 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	vendor-advisory, third-party-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
https://cert-portal.siemens.com/productcert/html/ssa-769027.html
https://cert-portal.siemens.com/productcert/html/ssa-794697.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.