Vulnerability in Linux Kernel
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (53.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Linux Kernel — versions 6.5
- Fedoraproject Fedora — versions 39
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.18.0-513.24.1.rt7.326.el8_9, 0:4.18.0-513.24.1.el8_9
- Red Hat Enterprise Linux 8.2 Advanced Update Support — versions 0:4.18.0-193.136.1.el8_2
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support — versions 0:4.18.0-305.134.1.el8_4
- Red Hat Enterprise Linux 8.4 Telecommunications Update Service — versions 0:4.18.0-305.134.1.rt7.210.el8_4, 0:4.18.0-305.134.1.el8_4
- Red Hat Enterprise Linux 8.4 Update Services For SAP Solutions — versions 0:4.18.0-305.134.1.el8_4
- Red Hat Enterprise Linux 8.6 Extended Update Support — versions 0:4.18.0-372.93.1.el8_6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2024:0930 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:0937 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:1018 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:1019 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:1055 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:1250 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:1253 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:1306 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:1607 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:1612 (vendor-advisory)
Frequently asked questions
- What is CVE-2023-6546?
- CVE-2023-6546 is a high-severity vulnerability in Linux Kernel, classified under Race Condition within a Thread. CVSS score: 7.0/10. Published 2023-12-21.
- How severe is CVE-2023-6546?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2023-6546 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.