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CVE-2023-6546: High Vulnerability in Linux Kernel

A high-severity race condition vulnerability in the Linux kernel's GSM 0710 tty multiplexor could allow local unprivileged users to escalate their privileges. Immediate patching is recommended.

HIGHPublic ExploitCVSS 7 · Published December 21, 2023

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CVE-2023-6546 is a high-severity vulnerability affecting the Linux kernel. This vulnerability allows a race condition in the GSM 0710 tty multiplexor, which occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled. The exploitation of this vulnerability can lead to a use-after-free condition on a struct gsm_dlci while restarting the gsm mux, potentially allowing a local unprivileged user to escalate their privileges on the system.

With a CVSS score of 7.0, this vulnerability is classified as high severity. Organizations utilizing affected systems should recognize the serious risk associated with this issue. The potential for privilege escalation poses significant security implications, warranting immediate attention.

As of now, there are no known public exploits, but the presence of a race condition indicates that the vulnerability could be actively exploited. Organizations should prioritize patching immediately to mitigate potential exploits.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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