The following advisory data is extracted from:

https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_8614.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-rt security update
Advisory ID:        RHSA-2024:8614-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:8614
Issue date:         2024-10-30
Revision:           03
CVE Names:          CVE-2021-47384
====================================================================

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

Security Fix(es):

* kernel: ovl: fix use after free in struct ovl_aio_req (CVE-2023-1252)

* hw: cpu: intel: Native Branch History Injection (BHI) (CVE-2024-2201)

* kernel: mm/sparsemem: fix race in accessing memory_section->usage (CVE-2023-52489)

* kernel: blk-mq: fix IO hang from sbitmap wakeup race (CVE-2024-26671)

* kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats (CVE-2024-26686)

* kernel: mptcp: fix data re-injection from stale subflow (CVE-2024-26826)

* kernel: mac802154: fix llsec key resources release in mac802154_llsec_key_del (CVE-2024-26961)

* kernel: hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field (CVE-2021-47384)

* kernel: mptcp: ensure snd_nxt is properly initialized on connect (CVE-2024-36889)

* kernel: ipv6: prevent possible NULL dereference in rt6_probe() (CVE-2024-40960)

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

* kernel: filelock: fix potential use-after-free in posix_lock_inode (CVE-2024-41049)

* kernel: mm: prevent derefencing NULL ptr in pfn_section_valid() (CVE-2024-41055)

* kernel: nvmet: fix a possible leak when destroy a ctrl during qp establishment (CVE-2024-42152)

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-2021-47384

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=2268118
https://bugzilla.redhat.com/show_bug.cgi?id=2269189
https://bugzilla.redhat.com/show_bug.cgi?id=2272811
https://bugzilla.redhat.com/show_bug.cgi?id=2273109
https://bugzilla.redhat.com/show_bug.cgi?id=2275604
https://bugzilla.redhat.com/show_bug.cgi?id=2278176
https://bugzilla.redhat.com/show_bug.cgi?id=2282356
https://bugzilla.redhat.com/show_bug.cgi?id=2284571
https://bugzilla.redhat.com/show_bug.cgi?id=2297544
https://bugzilla.redhat.com/show_bug.cgi?id=2297582
https://bugzilla.redhat.com/show_bug.cgi?id=2300422
https://bugzilla.redhat.com/show_bug.cgi?id=2300429
https://bugzilla.redhat.com/show_bug.cgi?id=2301519