VulnerabilityModified
CVE-2023-6546
A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel.
HIGH 7.0EPSS 0.73%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.73% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-366, CWE-362
- Affected
- linux/linux kernel · fedoraproject/fedora · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- 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-2024:2093
- https://access.redhat.com/errata/RHSA-2024:2394
- https://access.redhat.com/errata/RHSA-2024:2621
- https://access.redhat.com/errata/RHSA-2024:2697
- https://access.redhat.com/errata/RHSA-2024:4577
- https://access.redhat.com/errata/RHSA-2024:4729
- https://access.redhat.com/errata/RHSA-2024:4731
- https://access.redhat.com/errata/RHSA-2024:4970
- https://access.redhat.com/security/cve/CVE-2023-6546Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2255498Issue Tracking, Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/3c4f8333b582487a2d1e02171f1465531cde53e3Patch
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-20527
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.