CVE-2023-6546

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 v3.0 7.0 HIGH

7.0^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2023-6546	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2255498	Issue Tracking Patch Third Party Advisory
https://github.com/torvalds/linux/commit/3c4f8333b582487a2d1e02171f1465531cde53e3	Patch
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20527

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel:6.5:rc1::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.5:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.5:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.5:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.5:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.5:rc6::::::

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*

Information

Published : 2023-12-21 20:15

Updated : 2024-01-10 09:15

NVD link : CVE-2023-6546

Mitre link : CVE-2023-6546

JSON object : View

Products Affected

fedoraproject

fedora

linux

linux_kernel

redhat

enterprise_linux

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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