CVE-2023-42754
Public on 2023-10-04
Modified on 2024-03-28
Description
A NULL pointer dereference flaw was found in the Linux kernel ipv4 stack. The socket buffer (skb) was assumed to be associated with a device before calling __ip_options_compile, which is not always the case if the skb is re-routed by ipvs. This issue may allow a local user with CAP_NET_ADMIN privileges to crash the system.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | 2023-11-10 | ALAS-2023-1883 | Fixed |
| Amazon Linux 2 - Core | kernel | 2023-10-30 | ALAS2-2023-2328 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2023-10-31 | ALAS2KERNEL-5.10-2023-042 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2023-10-12 | ALAS2KERNEL-5.15-2023-028 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2023-10-31 | ALAS2KERNEL-5.4-2023-055 | Fixed |
| Amazon Linux 2023 | kernel | 2023-10-12 | ALAS2023-2023-385 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.4 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H |
| NVD | CVSSv3 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |