Use After Free Affecting kernel-rt package, versions <0:5.14.0-427.13.1.el9_4
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Test your applications- Snyk ID SNYK-ALMALINUX9-KERNELRT-8331594
- published 4 Nov 2024
- disclosed 30 Apr 2024
Introduced: 30 Apr 2024
CVE-2023-39198 Open this link in a new tabHow to fix?
Upgrade AlmaLinux:9 kernel-rt to version 0:5.14.0-427.13.1.el9_4 or higher.
This issue was patched in ALSA-2024:2394.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by AlmaLinux.
See How to fix? for AlmaLinux:9 relevant fixed versions and status.
A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.
References
- https://errata.almalinux.org/9/ALSA-2024-2394.html
- https://errata.almalinux.org/8/ALSA-2024-2950.html
- https://errata.almalinux.org/8/ALSA-2024-3138.html
- https://access.redhat.com/security/cve/CVE-2023-39198
- https://www.redhat.com/security/data/cve/CVE-2023-39198.html
- https://access.redhat.com/errata/RHSA-2024:2394
- https://access.redhat.com/errata/RHSA-2024:2950
- https://access.redhat.com/errata/RHSA-2024:3138
- https://bugzilla.redhat.com/show_bug.cgi?id=2218332
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html