CVE-2024-1086
Public on 2024-01-31
Modified on 2024-02-14
Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT.
We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.
The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT.
We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.
Severity
Important
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | 2024-02-14 | ALAS-2024-1919 | Fixed |
| Amazon Linux 2 - Core | kernel | 2024-02-15 | ALAS2-2024-2453 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2024-02-15 | ALAS2KERNEL-5.10-2024-050 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2024-02-15 | ALAS2KERNEL-5.15-2024-038 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2024-02-15 | ALAS2KERNEL-5.4-2024-060 | Fixed |
| Amazon Linux 2023 | kernel | 2024-02-15 | ALAS2023-2024-517 | 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 |