CVE-2023-6546

CVSS 3.1 Score 7.0 of 10 (high)

Details

Published Dec 21, 2023
Updated: Aug 2, 2024
CWE ID 416
CWE ID 362

Summary

CVE-2023-6546 is a new race condition vulnerability affecting the Linux kernel's GSM 0710 tty multiplexor. When two threads simultaneously execute the GSMIOC_SETCONF ioctl command on the same tty file descriptor, each with the gsm line discipline enabled, it results in a use-after-free issue on a struct gsm_dlci during the mux restart process. This vulnerability enables a local, unprivileged user to escalate their privileges on the system.

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