CVE-2023-6546
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.6 High
AI Score
Confidence
Low
3.5 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:H/Au:S/C:P/I:P/A:P
0.0004 Low
EPSS
Percentile
9.5%
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
www.openwall.com/lists/oss-security/2024/04/10/18
www.openwall.com/lists/oss-security/2024/04/10/21
www.openwall.com/lists/oss-security/2024/04/11/7
www.openwall.com/lists/oss-security/2024/04/11/9
www.openwall.com/lists/oss-security/2024/04/12/1
www.openwall.com/lists/oss-security/2024/04/12/2
www.openwall.com/lists/oss-security/2024/04/16/2
www.openwall.com/lists/oss-security/2024/04/17/1
access.redhat.com/errata/RHSA-2024:0930
access.redhat.com/errata/RHSA-2024:0937
access.redhat.com/errata/RHSA-2024:1018
access.redhat.com/errata/RHSA-2024:1019
access.redhat.com/errata/RHSA-2024:1055
access.redhat.com/errata/RHSA-2024:1250
access.redhat.com/errata/RHSA-2024:1253
access.redhat.com/errata/RHSA-2024:1306
access.redhat.com/errata/RHSA-2024:1607
access.redhat.com/errata/RHSA-2024:1612
access.redhat.com/errata/RHSA-2024:1614
access.redhat.com/errata/RHSA-2024:2394
access.redhat.com/errata/RHSA-2024:2621
access.redhat.com/errata/RHSA-2024:2697
access.redhat.com/security/cve/CVE-2023-6546
bugzilla.redhat.com/show_bug.cgi?id=2255498
github.com/torvalds/linux/commit/3c4f8333b582487a2d1e02171f1465531cde53e3
www.zerodayinitiative.com/advisories/ZDI-CAN-20527
Social References
More
Related
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.6 High
AI Score
Confidence
Low
3.5 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:H/Au:S/C:P/I:P/A:P
0.0004 Low
EPSS
Percentile
9.5%