CVE-2023-28328: linux linux_kernel NULL Pointer Dereference

CVSS: 5.5v3.1MediumModified

AliasesUBUNTU-CVE-2023-28328DEBIAN-CVE-2023-28328

Published 19-04-2023Last modified 19-03-2025

Vulnerability summary

CVE-2023-28328 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12% of scored vulnerabilities.

Overall risk

22/100

0100

Low · default modelHow is this calculated?

CVSS score

5.5/10

010

Medium · v3.1 (CVE.org)

EPSS score

0.22%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedIn no KEV catalog

RansomwareNone recordedNo known use recorded

Public exploits0No public exploits recorded

Timeline

19-04-2023
PublishedVulnerability first disclosed.
19-03-2025
Last modifiedVulnerability information updated.

Description

A NULL pointer dereference flaw was found in the az6027 driver in drivers/media/usb/dev-usb/az6027.c in the Linux Kernel. The message from user space is not checked properly before transferring into the device. This flaw allows a local user to crash the system or potentially cause a denial of service.

CVSS metrics

4 scores · 4 sources · 1 version

v3.15.5

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 21-09-2026

21-09-202621-10-2026

EPSS score

0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

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

Affected systems

Ubuntu93 products

linuxAll versions (No fix recorded) | < 4.4.0-241.275 | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-69.76
linux-allwinner-5.19< 5.19.0-1010.10~22.04.1
linux-aws< 4.4.0-1119.125 | < 4.4.0-1157.172 | < 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1033.37
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< 5.15.0-1033.37~20.04.1
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 | < 5.15.0-1035.42
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< 5.15.0-1035.42~20.04.1
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< 5.15.0-1035.42.1
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< 4.4.0-1089.96 | 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 | < 5.15.0-1031.38
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< 5.15.0-1031.38~20.04.1
linux-gcp-5.19< 5.19.0-1021.23~22.04.1
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 | < 5.15.0-1030.35
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15< 5.15.0-1029.34~20.04.1
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1065.69 | < 5.15.0-1017.22
linux-gkeop-5.15< 5.15.0-1017.22~20.04.1
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< 5.15.0-69.76~20.04.1
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 | < 5.15.0-1027.30
linux-ibm-5.4< 5.4.0-1045.50~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1023.28
linux-intel-iotg< 5.15.0-1027.32
linux-intel-iotg-5.15< 5.15.0-1027.32~20.04.1
linux-iot< 5.4.0-1013.15
linux-kvm< 4.4.0-1120.130 | < 4.15.0-1137.142 | < 5.4.0-1087.93 | < 5.15.0-1030.35
linux-lowlatency< 5.15.0-69.76
linux-lowlatency-hwe-5.15< 5.15.0-69.76~20.04.1
linux-lowlatency-hwe-5.19< 5.19.0-1022.23~22.04.1
linux-lts-xenial< 4.4.0-241.275~14.04.1
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-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0< 6.0.0-1021.21
linux-oem-6.1< 6.1.0-1006.6
linux-oracle< 4.15.0-1116.127~16.04.1 | < 4.15.0-1116.127 | < 5.4.0-1094.103 | < 5.15.0-1032.38
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< 5.15.0-1032.38~20.04.1
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 | < 5.15.0-1026.28
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) | < 5.15.0-1034.37
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1030.34~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-snapdragon< 4.15.0-1148.158
linux-xilinx-zynqmp< 5.4.0-1022.26