Vulnerability · Published Apr 19, 2023 · Assigned by redhat
CVE-2023-2166
Medium 5.5
In plain English
A medium-severity null pointer dereference in Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 90.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A null pointer dereference issue was found in can protocol in net/can/af_can.c in the Linux before Linux. ml_priv may not be initialized in the receive path of CAN frames. A local user could use this flaw to crash the system or potentially cause a denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-core | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-devel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-doc | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-modules | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-tools | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | perf | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| AlmaLinux:8 | python3-perf | 4.18.0-513.18.1.el8_9 | ALSA-2024:0897 |
| Debian:12 | linux | 6.1.4-1 | DEBIAN-CVE-2023-2166 |
| Debian:13 | linux | 6.1.4-1 | DEBIAN-CVE-2023-2166 |
| Debian:14 | linux | 6.1.4-1 | DEBIAN-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux | 5.15.0-67.74 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1031.35 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1034.41 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1034.41.1 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1030.37 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1028.33 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1016.21 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-38.39~22.04.1 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1026.29 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1026.31 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1029.34 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-67.74 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | 5.19.0-1021.22~22.04.1 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1023.23 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1030.36 | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1025.27 | UBUNTU-CVE-2023-2166 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-2166 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-2166 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H