CVE-2023-6817
Public on 2023-12-18
Modified on 2024-04-02
Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free.
We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.
The function nft_pipapo_walk did not skip inactive elements during set walk which could lead double deactivations of PIPAPO (Pile Packet Policies) elements, leading to use-after-free.
We recommend upgrading past commit 317eb9685095678f2c9f5a8189de698c5354316a.
Severity
Important
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | Not Affected | ||
| Amazon Linux 2 - Core | kernel | Not Affected | ||
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | Not Affected | ||
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2024-01-05 | ALAS2KERNEL-5.10-2024-045 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2024-01-19 | ALAS2KERNEL-5.10-2024-047 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2024-01-05 | ALAS2KERNEL-5.15-2024-033 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2024-01-19 | ALAS2KERNEL-5.15-2024-035 | Fixed |
| Amazon Linux 2023 | kernel | 2024-01-19 | ALAS2023-2024-488 | Fixed |
| Amazon Linux 2 - Livepatch Extra | kernel-livepatch-5.10.201-191.748 | 2024-02-29 | ALAS2LIVEPATCH-2024-167 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |