The following advisory data is extracted from:

https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_2004.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 security and bug fix update
Advisory ID:        RHSA-2024:2004-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:2004
Issue date:         2024-04-23
Revision:           03
CVE Names:          CVE-2020-36558
====================================================================

Summary: 

An update for kernel 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 packages contain the Linux kernel, the core of any Linux operating system.

Security fixes:

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

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

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

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

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

This update also fixes the following bugs:

* NFS client closes active connection (RHEL-22193)

* kernel panic at __list_del_entry from smb2_reconnect_server (RHEL-26301)

* kernel: race condition when call to VT_RESIZEX ioctl and vc_cons[i].d is already NULL, causing a NULL pointer dereference. (RHEL-28639)

* kernel: net/sched: sch_hfsc UAF (RHEL-16458)

* kernel: irdma: Improper access control (RHEL-6299)

* The message in RHEL 7 ?stack-protector: Kernel stack is corrupted in:? is triggered because perf_trace_buf_prepare() does not verify that per_cpu array perf_trace_buf has allocated per_cpu buffers in it. (RHEL-18052)

* [rhel7] gfs2: Invalid metadata access in punch_hole (RHEL-28785)

* UDP packets dropped due to SELinux denial (RHEL-27751)

* Boot fails with kernel panic at acpi_device_hid+0x6 (RHEL-8721)

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