CVE-2022-47929: debian debian_linux NULL Pointer Dereference

Modified

AliasesUBUNTU-CVE-2022-47929DEBIAN-CVE-2022-47929

Published 17-01-2023Last modified 14-10-2026

Vulnerability summary

CVE-2022-47929 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 1.04% chance of exploitation in the next 30 days, higher than 64% of scored vulnerabilities. 1 public exploit is recorded.

Priority

Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

5.5/10

010

Medium · v3.1 (CVE.org)

EPSS score

1.04%

0%100%

Low · +0.08 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits1reference

Timeline

17-01-2023
PublishedVulnerability first disclosed.
14-10-2026
Last modifiedVulnerability information updated.

Description

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 metrics

5 scores · 4 sources · 2 versions

v4.06.8v3.15.5

EPSS trend

Probability

1.04%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

Increase +0.08 pp

From 0.96% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found

referenceUnverified
Exploit Reference (spinics.net)
Maturity: unknown

Weaknesses

CWE · root cause

CWE-476NULL Pointer DereferenceThe product dereferences a pointer that it expects to be valid but is NULL.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu91 products

linux< 4.4.0-239.273 | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-70.77
linux-aws< 4.4.0-1117.123 | < 4.4.0-1155.170 | < 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1034.38
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)
linux-aws-5.13All versions (No fix recorded)

linux-aws-5.15< 5.15.0-1034.38~20.04.1
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1097.105~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fips< 4.15.0-2092.98 | All versions (No fix recorded) | < 5.4.0-1099.107+fips1
linux-aws-hwe< 4.15.0-1153.166~16.04.1
linux-azure< 4.15.0-1162.177~14.04.1 | < 4.15.0-1162.177~16.04.1 | All versions (No fix recorded) | < 5.4.0-1104.110 | < 5.15.0-1036.43
linux-azure-4.15< 4.15.0-1162.177
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1036.43~20.04.1
linux-azure-5.19< 5.19.0-1023.24~22.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1104.110~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fde< 5.15.0-1036.43.1
linux-azure-fips< 4.15.0-2071.77 | All versions (No fix recorded) | < 5.4.0-1104.110+fips1
linux-bluefield< 5.4.0-1059.65 | < 5.15.0-1015.17
linux-dell300x< 4.15.0-1062.67
linux-fips< 4.4.0-1088.95 | All versions (No fix recorded) | < 4.15.0-1108.119 | < 5.4.0-1073.82
linux-gcp< 4.15.0-1147.163~16.04.1 | All versions (No fix recorded) | < 5.4.0-1101.110 | < 5.15.0-1032.40
linux-gcp-4.15< 4.15.0-1147.163
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1032.40~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1101.110~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-fips< 4.15.0-2055.60 | All versions (No fix recorded) | < 5.4.0-1101.110+fips1
linux-gke< 5.4.0-1095.102 | < 5.15.0-1031.36
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15< 5.15.0-1031.36~20.04.1
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1065.69 | < 5.15.0-1018.23
linux-gkeop-5.15< 5.15.0-1018.23~20.04.1
linux-gkeop-5.4All versions (No fix recorded)
linux-hwe< 4.15.0-208.219~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-70.77~20.04.1
linux-hwe-5.19< 5.19.0-40.41~22.04.1
linux-hwe-5.4< 5.4.0-144.161~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1045.50 | < 5.15.0-1028.31
linux-ibm-5.4< 5.4.0-1045.50~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1024.29
linux-intel-iotg< 5.15.0-1028.33
linux-intel-iotg-5.15< 5.15.0-1030.35~20.04.1
linux-iot< 5.4.0-1013.15
linux-kvm< 4.4.0-1118.128 | < 4.15.0-1137.142 | < 5.4.0-1087.93 | < 5.15.0-1031.36
linux-lowlatency< 5.15.0-70.77
linux-lowlatency-hwe-5.15< 5.15.0-70.77~20.04.1
linux-lowlatency-hwe-5.19< 5.19.0-1022.23~22.04.1
linux-lts-xenial< 4.4.0-239.273~14.04.1
linux-nvidia< 5.15.0-1023.23
linux-nvidia-tegra-5.15< 5.15.0-1014.14~20.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17< 5.17.0-1035.36
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0< 6.0.0-1020.20
linux-oem-6.1< 6.1.0-1007.7
linux-oracle< 4.15.0-1116.127~16.04.1 | < 4.15.0-1116.127 | < 5.4.0-1094.103 | < 5.15.0-1033.39
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1033.39~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1094.103~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1081.92 | < 5.15.0-1027.29
linux-raspi-5.4< 5.4.0-1081.92~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2< 4.15.0-1129.137 | All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1036.39
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1031.35~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-snapdragon< 4.15.0-1148.158
linux-xilinx-zynqmp< 5.4.0-1022.26