CVE-2023-6546
Public on 2023-12-21
Modified on 2024-02-27
Description
A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system.
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 - Kernel-5.15 Extra | kernel | Pending Fix | ||
| Amazon Linux 2 - Core | kernel | 2024-02-01 | ALAS2-2024-2443 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2023-08-31 | ALAS2KERNEL-5.10-2023-039 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2024-02-01 | ALAS2KERNEL-5.4-2024-059 | Fixed |
| Amazon Linux 2023 | kernel | Not Affected |
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 | 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |