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CVE-2023-6546

Kernel: gsm multiplexing race condition leads to privilege escalation

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version < 6.5
LinuxLinux Kernel Version6.5 Updaterc1
LinuxLinux Kernel Version6.5 Updaterc2
LinuxLinux Kernel Version6.5 Updaterc3
LinuxLinux Kernel Version6.5 Updaterc4
LinuxLinux Kernel Version6.5 Updaterc5
LinuxLinux Kernel Version6.5 Updaterc6
FedoraprojectFedora Version39
RedhatEnterprise Linux Version8.0
RedhatEnterprise Linux Version9.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.77% 0.507
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
secalert@redhat.com 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

CWE-366 Race Condition within a Thread

If two threads of execution use a resource simultaneously, there exists the possibility that resources may be used while invalid, in turn making the state of execution undefined.

https://access.redhat.com/errata/RHSA-2024:2394
https://access.redhat.com/errata/RHSA-2024:1250
https://access.redhat.com/errata/RHSA-2024:1306
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-2024:1253
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-2024:2621
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-2023-6546
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2255498
Patch
Third Party Advisory
Issue Tracking
https://github.com/torvalds/linux/commit/3c4f8333b582487a2d1e02171f1465531cde53e3
Patch
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
http://www.openwall.com/lists/oss-security/2024/04/17/1