Race Condition The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-KERNELHEADERS-7555139
- published24 Jul 2024
- disclosed21 Dec 2023
Introduced: 21 Dec 2023
CVE-2023-6546 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.
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.
References
- https://access.redhat.com/security/cve/CVE-2023-6546
- http://www.openwall.com/lists/oss-security/2024/04/10/18
- http://www.openwall.com/lists/oss-security/2024/04/10/21
- http://www.openwall.com/lists/oss-security/2024/04/11/7
- http://www.openwall.com/lists/oss-security/2024/04/11/9
- http://www.openwall.com/lists/oss-security/2024/04/12/1
- http://www.openwall.com/lists/oss-security/2024/04/12/2
- http://www.openwall.com/lists/oss-security/2024/04/16/2
- http://www.openwall.com/lists/oss-security/2024/04/17/1
- https://access.redhat.com/errata/RHSA-2024:4731
- https://bugzilla.redhat.com/show_bug.cgi?id=2255498
- https://github.com/torvalds/linux/commit/3c4f8333b582487a2d1e02171f1465531cde53e3
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-20527