The following advisory data is extracted from:

https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_5065.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-2024:5065-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:5065
Issue date:         2024-08-07
Revision:           03
CVE Names:          CVE-2021-47393
====================================================================

Summary: 

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

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: drm: Don't unref the same fb many times by mistake due to deadlock handling (CVE-2023-52486)

* kernel: tcp: add sanity checks to rx zerocopy (CVE-2024-26640)

* kernel: vfio/pci: Lock external INTx masking ops (CVE-2024-26810)

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

* kernel: NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102 (CVE-2024-26870)

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

* kernel: wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes (CVE-2024-35789)

* kernel: mm/hugetlb: fix missing hugetlb_lock for resv uncharge (CVE-2024-36000)

* kernel: hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs (CVE-2021-47393)

* kernel: net/mlx5: Discard command completions in internal error (CVE-2024-38555)

* kernel: ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound (CVE-2024-33621)

* kernel: tls: fix missing memory barrier in tls_init (CVE-2024-36489)

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-2021-47393

References:

https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=2269070
https://bugzilla.redhat.com/show_bug.cgi?id=2270100
https://bugzilla.redhat.com/show_bug.cgi?id=2273654
https://bugzilla.redhat.com/show_bug.cgi?id=2275604
https://bugzilla.redhat.com/show_bug.cgi?id=2275711
https://bugzilla.redhat.com/show_bug.cgi?id=2278176
https://bugzilla.redhat.com/show_bug.cgi?id=2281057
https://bugzilla.redhat.com/show_bug.cgi?id=2281968
https://bugzilla.redhat.com/show_bug.cgi?id=2282345
https://bugzilla.redhat.com/show_bug.cgi?id=2293444
https://bugzilla.redhat.com/show_bug.cgi?id=2293657
https://bugzilla.redhat.com/show_bug.cgi?id=2293687