The following advisory data is extracted from:

https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7398.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-2023:7398-01
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2023:7398
Issue date:         2023-11-21
Revision:           01
CVE Names:          CVE-2022-45884
====================================================================

Summary: 

An update for kernel is now available for Red Hat Enterprise Linux 8.6 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 packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)

* kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

* kernel: use-after-free due to race condition occurring in dvb_register_device() (CVE-2022-45884)

* kernel: use-after-free due to race condition occurring in dvb_net.c (CVE-2022-45886)

* kernel: use-after-free due to race condition occurring in dvb_ca_en50221.c (CVE-2022-45919)

* Kernel: NULL pointer dereference problem in sctp_sched_dequeue_common (CVE-2023-2177)

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.

Bug Fix(es):

* LPAR is crashed by Phyp when doing DLPAR CPU operations (BZ#2193377)

* ibmvnic: NONFATAL reset causes dql BUG_ON crash (BZ#2236702)

* i40e: backport selected bugfixes (BZ#2238306)

* Random delay receiving packets after bringing up VLAN on top of VF with vf-vlan-pruning enabled (BZ#2240752)

* sctp: fix hb_timer refresh for the pf state on transports (BZ#2245286)

* sctp: sysctl: make extra pointers netns aware (BZ#2245289)


Solution:

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



CVEs:

CVE-2022-45884

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2148510
https://bugzilla.redhat.com/show_bug.cgi?id=2148517
https://bugzilla.redhat.com/show_bug.cgi?id=2151956
https://bugzilla.redhat.com/show_bug.cgi?id=2187953
https://bugzilla.redhat.com/show_bug.cgi?id=2225097
https://bugzilla.redhat.com/show_bug.cgi?id=2225201