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CVE-2023-6546 Race condition

Significant
Remediate Within one Month

CVE Information

Original CVE data

Published:
Updated:

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.

CWE: CWE-362
CVSS v2-
CVSS v37
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
References
https://access.redhat.com/security/cve/CVE-2023-6546
https://bugzilla.redhat.com/show_bug.cgi?id=2255498
https://github.com/torvalds/linux/commit/3c4f8333b582487a2d1e02171f1465531cde53e3
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20527
https://access.redhat.com/errata/RHSA-2024:0930
https://access.redhat.com/errata/RHSA-2024:0937
https://access.redhat.com/errata/RHSA-2024:1018
https://access.redhat.com/errata/RHSA-2024:1019
https://access.redhat.com/errata/RHSA-2024:1055
https://access.redhat.com/errata/RHSA-2024:1250
https://access.redhat.com/errata/RHSA-2024:1253
https://access.redhat.com/errata/RHSA-2024:1306
https://access.redhat.com/errata/RHSA-2024:1607
https://access.redhat.com/errata/RHSA-2024:1612
https://access.redhat.com/errata/RHSA-2024:1614
https://access.redhat.com/errata/RHSA-2024:2394
https://access.redhat.com/errata/RHSA-2024:2621
http://www.openwall.com/lists/oss-security/2024/04/10/21
http://www.openwall.com/lists/oss-security/2024/04/17/1
http://www.openwall.com/lists/oss-security/2024/04/11/9
http://www.openwall.com/lists/oss-security/2024/04/11/7
http://www.openwall.com/lists/oss-security/2024/04/10/18
http://www.openwall.com/lists/oss-security/2024/04/16/2
http://www.openwall.com/lists/oss-security/2024/04/12/2
http://www.openwall.com/lists/oss-security/2024/04/12/1
https://access.redhat.com/errata/RHSA-2024:2697
https://access.redhat.com/errata/RHSA-2024:2093
Affected Vendors

Fedoraproject - (1)

Linux - (1)

Redhat - (1)

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOnengine

Race condition

CVSS Scores as calculated by PRIOnengine
CVSS v26.9
AV:L/AC:M/AU:N/C:C/I:C/A:C
CVSS v37
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
MITRE CWE Top 25

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Exploits

Exploits are available either through exploit packs, Github repos or the world wide web in general.

Active Exploitation

Vulnerability is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

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Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

T1499.004 - Endpoint Denial of Service (Application or System Exploitation)
T1203 - Exploitation for Client Execution
T1059 - Command and Scripting Interpreter

Compliance Impact

How the submited vulnerability affects compliance

PCI DSS v3.2.1-6.5.2 - Buffer Overflows

Web Application Security Frameworks

Applicable if the issue likely affects a web application

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