CVE-2022-47929 json
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…
published 2023-01-17 3 y ago modified 2026-10-14 25 d ago also EUVD-2022-50665
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1
- linux Debian 14, Debian 13, Debian 12 6.1.7-1
debian advisories DEBIAN-CVE-2022-47929
- linux Ubuntu 18.04 LTS 4.15.0-208.220
- linux Ubuntu 20.04 LTS 5.4.0-144.161
- linux Ubuntu 22.04 LTS 5.15.0-70.77
- linux-aws Ubuntu 18.04 LTS 4.15.0-1153.166
- linux-aws Ubuntu 20.04 LTS 5.4.0-1097.105
- linux-aws Ubuntu 22.04 LTS 5.15.0-1034.38
- linux-gcp Ubuntu 20.04 LTS 5.4.0-1101.110
- linux-gcp Ubuntu 22.04 LTS 5.15.0-1032.40
ubuntu advisories UBUNTU-CVE-2022-47929
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- perf rhev hypervisor 4.4, RHEL 8.6 EUS 4.18.0-372.87.1.el8_6
- kernel RHEL 9 5.14.0-284.11.1.el9_2
- perf RHEL 9 5.14.0-284.11.1.el9_2
- rtla RHEL 9 5.14.0-284.11.1.el9_2
- bpftool RHEL 9 7.0.0-284.11.1.el9_2
- kernel-64k RHEL 9 5.14.0-284.11.1.el9_2
- kernel-core RHEL 9 5.14.0-284.11.1.el9_2
- kernel-tools RHEL 9 5.14.0-284.11.1.el9_2
red hat advisories RHSA-2024:0412RHSA-2023:2458RHSA-2023:2148RHSA-2023:2736RHSA-2023:2951
- kernel-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.124.1
- kernel-syms-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.124.1
- kernel-source-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.124.1
- kernel-rt SLE Micro 5.2, SLE Micro 5.1, Real Time Module 15 SP3 5.3.18-150300.121.1
- kernel-syms-rt Real Time Module 15 SP3 5.3.18-150300.121.1
- kernel-rt_debug Real Time Module 15 SP3 5.3.18-150300.121.1
- kernel-source-rt Real Time Module 15 SP3 5.3.18-150300.121.1
- kernel-syms SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.150.1
suse advisories SUSE-SU-2023:0618-1SUSE-SU-2023:0779-1SUSE-SU-2023:0634-1SUSE-SU-2023:0488-1SUSE-SU-2023:0485-1SUSE-SU-2023:0433-1
- kernel-rt AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
- kernel-rt-kvm AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
- kernel-rt-core AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
- kernel-rt-modules AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
- kernel-rt-debug-kvm AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
- kernel-rt-debug-core AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
- kernel-rt-debug-modules AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
- kernel-rt-modules-extra AlmaLinux 8 4.18.0-477.10.1.rt7.274.el8_8
almalinux advisories ALSA-2023:2736ALSA-2023:2951ALSA-2023:2148ALSA-2023:2458
- kernel CBL-Mariner 2.0 5.15.92.1-1
- hyperv-daemons CBL-Mariner 2.0 5.15.92.1-1
azure linux advisories AZL-13050AZL-13123
Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2022-47929 updated cvss 4.2
kernel: NULL pointer dereference in traffic control subsystem
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 moreaffected: workaround, no fix planned “Out of support scope”
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Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.87.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.87.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.87.1.el8_6fixed: vendor fix RHSA-2024:0412
-
Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-284.11.1.el9_2, rtla 5.14.0-284.11.1.el9_2, kernel-devel-matched 5.14.0-284.11.1.el9_2, kernel-64k-devel-matched 5.14.0-284.11.1.el9_2, kernel-debug-devel-matched 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, +5 morefixed: vendor fix RHSA-2023:2458
-
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-477.10.1.el8_8, kernel 4.18.0-477.10.1.el8_8, bpftool 4.18.0-477.10.1.el8_8, kernel-core 4.18.0-477.10.1.el8_8, kernel-tools 4.18.0-477.10.1.el8_8, python3-perf 4.18.0-477.10.1.el8_8, +15 morefixed: vendor fix RHSA-2023:2951
-
Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.0.0-284.11.1.el9_2, kernel 5.14.0-284.11.1.el9_2, kernel-64k 5.14.0-284.11.1.el9_2, kernel-core 5.14.0-284.11.1.el9_2, kernel-tools 5.14.0-284.11.1.el9_2, python3-perf 5.14.0-284.11.1.el9_2, +28 morefixed: vendor fix RHSA-2023:2458
-
Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.87.1.el8_6, kernel 4.18.0-372.87.1.el8_6, bpftool 4.18.0-372.87.1.el8_6, kernel-core 4.18.0-372.87.1.el8_6, kernel-tools 4.18.0-372.87.1.el8_6, python3-perf 4.18.0-372.87.1.el8_6, +15 morefixed: vendor fix RHSA-2024:0412
-
Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.10.1.el8_8fixed: vendor fix RHSA-2023:2951
-
Red Hat Enterprise Linux CRB (v. 9) kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.11.1.el9_2fixed: vendor fix RHSA-2023:2458
show 5 moreshow fewer
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Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-kvm 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-kvm 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-core 4.18.0-477.10.1.rt7.274.el8_8, +4 morefixed: vendor fix RHSA-2023:2736
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Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-kvm 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-kvm 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-core 5.14.0-284.11.1.rt14.296.el9_2, +6 morefixed: vendor fix RHSA-2023:2148
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Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules-extra 4.18.0-477.10.1.rt7.274.el8_8, +2 morefixed: vendor fix RHSA-2023:2736
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Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-modules-core 5.14.0-284.11.1.rt14.296.el9_2, kernel-rt-debug-modules 5.14.0-284.11.1.rt14.296.el9_2, +4 morefixed: vendor fix RHSA-2023:2148
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Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.87.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.87.1.el8_6fixed: vendor fix RHSA-2024:0412
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
cisa ICSA-25-044-09 updated cvss 5.5
Siemens SCALANCE W700 IEEE 802.11ax
-
Siemens SCALANCE WAB762-1 (6GK5762-1AJ00-6AA0) <V3.0.0 Siemens SCALANCE WAM763-1 (6GK5763-1AL00-7DA0) <V3.0.0 Siemens SCALANCE WAM763-1 (ME) (6GK5763-1AL00-7DC0) <V3.0.0 Siemens SCALANCE WAM763-1 (US) (6GK5763-1AL00-7DB0) <V3.0.0 Siemens SCALANCE WAM766-1 (6GK5766-1GE00-7DA0) <V3.0.0 Siemens SCALANCE WAM766-1 (ME) (6GK5766-1GE00-7DC0) <V3.0.0affected: fixed in V3.0.0 support.industry.siemens.com
+13 more productsfewer
Siemens SCALANCE WAM766-1 (US) (6GK5766-1GE00-7DB0) <V3.0.0 Siemens SCALANCE WAM766-1 EEC (6GK5766-1GE00-7TA0) <V3.0.0 Siemens SCALANCE WAM766-1 EEC (ME) (6GK5766-1GE00-7TC0) <V3.0.0 Siemens SCALANCE WAM766-1 EEC (US) (6GK5766-1GE00-7TB0) <V3.0.0 Siemens SCALANCE WUB762-1 (6GK5762-1AJ00-1AA0) <V3.0.0 Siemens SCALANCE WUB762-1 iFeatures (6GK5762-1AJ00-2AA0) <V3.0.0 Siemens SCALANCE WUM763-1 (6GK5763-1AL00-3AA0) <V3.0.0 Siemens SCALANCE WUM763-1 (6GK5763-1AL00-3DA0) <V3.0.0 Siemens SCALANCE WUM763-1 (US) (6GK5763-1AL00-3AB0) <V3.0.0 Siemens SCALANCE WUM763-1 (US) (6GK5763-1AL00-3DB0) <V3.0.0 Siemens SCALANCE WUM766-1 (6GK5766-1GE00-3DA0) <V3.0.0 Siemens SCALANCE WUM766-1 (ME) (6GK5766-1GE00-3DC0) <V3.0.0 Siemens SCALANCE WUM766-1 (USA) (6GK5766-1GE00-3DB0) <V3.0.0
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
cisa ICSA-23-166-11 updated cvss 5.5
Siemens SIMATIC S7-1500 TM MFP Linux Kernel
-
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem <V1.1affected: fixed in V1.1, workaround support.industry.siemens.com
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- spinics.net https://www.spinics.net/lists/netdev/msg555705.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
- Technology feeds
References
-
git.kernel.org
/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=96398560f26aa07e8f2969d73c8197e6a6d10407
patch, vendor-advisory
-
cdn.kernel.org
/pub/linux/kernel/v6.x/ChangeLog-6.1.6
mailing-list, patch, vendor-advisory
-
spinics.net
/lists/netdev/msg555705.html
exploit, mailing-list, third-party-advisory
-
debian.org
/security/2023/dsa-5324
vendor-advisory, third-party-advisory
-
tldp.org
/HOWTO/Traffic-Control-HOWTO/components.html
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
- cert-portal.siemens.com /productcert/html/ssa-794697.html
- cert-portal.siemens.com /productcert/html/ssa-769027.html
Sources
- CVE List CVE-2022-47929
- NVD CVE-2022-47929
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.