The following advisory data is extracted from:

https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_2003.json

Red Hat officially shut down their mailing list notifications October 10, 2023.  Due to this, Packet Storm has recreated the below data as a reference point to raise awareness.  It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.

- Packet Storm Staff




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Red Hat Security Advisory

Synopsis:           Important: kernel-rt security update
Advisory ID:        RHSA-2024:2003-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:2003
Issue date:         2024-04-23
Revision:           03
CVE Names:          CVE-2020-36558
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Summary: 

An update for kernel-rt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.




Description:

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: use after free in unix_stream_sendpage (CVE-2023-4622)

* kernel: race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference (CVE-2020-36558)

* kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

* kernel: net/sched: sch_hfsc UAF (CVE-2023-4623)

* kernel: irdma: Improper access control (CVE-2023-25775)

Bug Fix(es):

* kernel-rt: Update RT source tree to the latest RHEL-7.9z30 batch [rhel-7.9.z] (JIRA:RHEL-26440)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.


Solution:

https://access.redhat.com/articles/11258



CVEs:

CVE-2020-36558

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2112693
https://bugzilla.redhat.com/show_bug.cgi?id=2187308
https://bugzilla.redhat.com/show_bug.cgi?id=2231410
https://bugzilla.redhat.com/show_bug.cgi?id=2237757
https://bugzilla.redhat.com/show_bug.cgi?id=2237760