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.
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2023-12-21T20:01:03.217Z

Updated: 2024-11-15T15:13:50.794Z

Reserved: 2023-12-06T07:11:48.937Z

Link: CVE-2023-6546

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-12-21T20:15:08.260

Modified: 2024-09-14T00:15:13.403

Link: CVE-2023-6546

cve-icon Redhat

Severity : Important

Publid Date: 2023-12-21T00:00:00Z

Links: CVE-2023-6546 - Bugzilla