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Case File

CVE-2023-6546

HIGH · CVSS 7 EPSS 0.77% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-12-21 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.0. It affects Linux. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2023-6546
Severity
HIGH
CVSS
7
EPSS
0.77%
Linux

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)