The following advisory data is extracted from:

https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_5281.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




====================================================================
Red Hat Security Advisory

Synopsis:           Important: kernel security update
Advisory ID:        RHSA-2024:5281-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:5281
Issue date:         2024-08-14
Revision:           03
CVE Names:          CVE-2021-47311
====================================================================

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 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:TCP-spoofed ghost ACKs and leak initial sequence number (CVE-2023-52881,RHV-2024-1001)

* kernel: uio: Fix use-after-free in uio_open (CVE-2023-52439)

* kernel: gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump (CVE-2023-52448)

* kernel: bnxt: prevent skb UAF after handing over to PTP worker (CVE-2022-48637)

* kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by untrusted application (CVE-2024-21823)

* kernel: mlxsw: spectrum_acl_tcam: Fix memory leak when canceling rehash work (CVE-2024-35852)

* kernel: hwmon: (w83792d) Fix NULL pointer dereference by removing unnecessary structure field (CVE-2021-47385)

* kernel: net: qcom/emac: fix UAF in emac_remove (CVE-2021-47311)

* kernel: proc/vmcore: fix clearing user buffer by properly using clear_user() (CVE-2021-47566)

* kernel: rtnetlink: Correct nested IFLA_VF_VLAN_LIST attribute validation (CVE-2024-36017)

* kernel: ionic: fix use after netif_napi_del() (CVE-2024-39502)

* kernel: SUNRPC: Fix UAF in svc_tcp_listen_data_ready() (CVE-2023-52885)

* kernel: NFSD: Fix the behavior of READ near OFFSET_MAX (CVE-2022-48827)

* kernel: NFSD: Fix ia_size underflow (CVE-2022-48828)

* kernel: NFSD: Fix NFSv3 SETATTR/CREATE's handling of large file sizes (CVE-2022-48829)

* (CVE-2024-41091, ?)

* (CVE-2024-41090, ?)

* (CVE-2024-36971, ?)

Bug Fix(es):

* Fbcon regression introduced by the fix for CVE-2023-38409 (JIRA:RHEL-47026)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer the CVE page(s) listed in the References section.


Solution:

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



CVEs:

CVE-2021-47311

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2258875
https://bugzilla.redhat.com/show_bug.cgi?id=2265271
https://bugzilla.redhat.com/show_bug.cgi?id=2265653
https://bugzilla.redhat.com/show_bug.cgi?id=2277831
https://bugzilla.redhat.com/show_bug.cgi?id=2278989
https://bugzilla.redhat.com/show_bug.cgi?id=2281257
https://bugzilla.redhat.com/show_bug.cgi?id=2282355
https://bugzilla.redhat.com/show_bug.cgi?id=2282471
https://bugzilla.redhat.com/show_bug.cgi?id=2283463
https://bugzilla.redhat.com/show_bug.cgi?id=2284417
https://bugzilla.redhat.com/show_bug.cgi?id=2292331
https://bugzilla.redhat.com/show_bug.cgi?id=2297474
https://bugzilla.redhat.com/show_bug.cgi?id=2297730
https://bugzilla.redhat.com/show_bug.cgi?id=2298166
https://bugzilla.redhat.com/show_bug.cgi?id=2298167
https://bugzilla.redhat.com/show_bug.cgi?id=2298168
https://bugzilla.redhat.com/show_bug.cgi?id=2299240
https://bugzilla.redhat.com/show_bug.cgi?id=2299336