The following advisory data is extracted from:

https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_8107.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:           Moderate: kernel security update
Advisory ID:        RHSA-2024:8107-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:8107
Issue date:         2024-10-15
Revision:           03
CVE Names:          CVE-2021-47321
====================================================================

Summary: 

An update for kernel is now available for Red Hat Enterprise Linux 8.8 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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: ovl: fix use after free in struct ovl_aio_req (CVE-2023-1252)

* kernel: udp: do not accept non-tunnel GSO skbs landing in a tunnel (CVE-2024-35884)

* kernel: watchdog: Fix possible use-after-free by calling del_timer_sync() (CVE-2021-47321)

* kernel: mlxsw: spectrum: Protect driver from buggy firmware (CVE-2021-47560)

* kernel: scsi: qla2xxx: Fix off by one in qla_edif_app_getstats() (CVE-2024-36025)

* kernel: scsi: lpfc: Move NPIV's transport unregistration to after resource clean up (CVE-2024-36952)

* kernel: net: openvswitch: fix overwriting ct original tuple for ICMPv6 (CVE-2024-38558)

* kernel: md/raid5: fix deadlock that raid5d() wait for itself to clear MD_SB_CHANGE_PENDING (CVE-2024-39476)

* kernel: ext4: fix uninitialized ratelimit_state->lock access in __ext4_fill_super() (CVE-2024-40998)

* kernel: net/sched: Fix UAF when resolving a clash (CVE-2024-41040)

* kernel: tipc: Return non-zero value from tipc_udp_addr2str() on error (CVE-2024-42284)

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-2021-47321

References:

https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=2176140
https://bugzilla.redhat.com/show_bug.cgi?id=2281704
https://bugzilla.redhat.com/show_bug.cgi?id=2282440
https://bugzilla.redhat.com/show_bug.cgi?id=2283389
https://bugzilla.redhat.com/show_bug.cgi?id=2284421
https://bugzilla.redhat.com/show_bug.cgi?id=2284598
https://bugzilla.redhat.com/show_bug.cgi?id=2293441
https://bugzilla.redhat.com/show_bug.cgi?id=2295914
https://bugzilla.redhat.com/show_bug.cgi?id=2297582
https://bugzilla.redhat.com/show_bug.cgi?id=2300409