DEBIAN-CVE-2023-6546

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2023-6546
Published: 21 Dec 2023, 20:15
Last modified:28 Apr 2026, 20:27

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 Dec 2023, 20:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:27
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•linux

    < 5.10.197-1 | < 6.1.52-1 | < 6.4.13-1 | < 6.4.13-1

References (1)