The following advisory data is extracted from:

https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_1882.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 and bug fix update
Advisory ID:        RHSA-2024:1882-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:1882
Issue date:         2024-04-18
Revision:           03
CVE Names:          CVE-2023-6240
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Summary: 

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.

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: Marvin vulnerability side-channel leakage in the RSA decryption operation (CVE-2023-6240)

* kernel: tls: use-after-free with partial reads and async decrypt (CVE-2024-26582)

* kernel: tls: handle backlogging of crypto requests (CVE-2024-26584)

* kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (CVE-2024-26586)

Bug Fix(es):

* kernel-rt: kernel: mlxsw: spectrum_acl_tcam: Fix stack corruption (JIRA:RHEL-29214)

* kernel-rt: update RT source tree to the latest RHEL-9.2 ad hoc schedule build (JIRA:RHEL-30439)

* kernel-rt: kernel: tls: use-after-free with partial reads and async decrypt (JIRA:RHEL-26399)

* kernel-rt: kernel: Marvin vulnerability side-channel leakage in the RSA decryption operation (JIRA:RHEL-29687)

* kernel-rt: kernel: tls: handle backlogging of crypto requests (JIRA:RHEL-30451)


Solution:

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



CVEs:

CVE-2023-6240

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2250843
https://bugzilla.redhat.com/show_bug.cgi?id=2265518
https://bugzilla.redhat.com/show_bug.cgi?id=2265519
https://bugzilla.redhat.com/show_bug.cgi?id=2265645