The following advisory data is extracted from:

https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_5256.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-rt security update
Advisory ID:        RHSA-2024:5256-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:5256
Issue date:         2024-08-13
Revision:           03
CVE Names:          CVE-2021-47624
====================================================================

Summary: 

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

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

Security Fix(es):

* kernel: netfilter: nf_tables: disallow anonymous set with timeout flag (CVE-2024-26642)

* kernel: netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain (CVE-2024-26808)

* kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)

* kernel: fs: sysfs: Fix reference leak in sysfs_break_active_protection() (CVE-2024-26993)

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

* kernel: netfilter: nf_tables: use timestamp to check for set element timeout (CVE-2024-27397)

* kernel: netfilter: nft_flow_offload: reset dst in route object after setting up flow (CVE-2024-27403)

* kernel: netfilter: nf_tables: Fix potential data-race in __nft_flowtable_type_get() (CVE-2024-35898)

* kernel: netfilter: nf_tables: discard table flag update with pending basechain deletion (CVE-2024-35897)

* kernel: net: CVE-2024-36971 kernel: UAF in network route management (CVE-2024-36971)

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

* kernel: scsi: qedi: Fix crash while reading debugfs attribute (CVE-2024-40978)

* kernel: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change (CVE-2021-47624)

* kernel: virtio-net: tap: mlx5_core short frame denial of service (CVE-2024-41090)

* kernel: virtio-net: tun: mlx5_core short frame denial of service (CVE-2024-41091)

Bug Fix(es):

* kernel-rt: update RT source tree to the latest RHEL-9.0.z Batch 19 (JIRA:RHEL-45540)

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-2021-47624

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2270881
https://bugzilla.redhat.com/show_bug.cgi?id=2273405
https://bugzilla.redhat.com/show_bug.cgi?id=2277238
https://bugzilla.redhat.com/show_bug.cgi?id=2278314
https://bugzilla.redhat.com/show_bug.cgi?id=2278989
https://bugzilla.redhat.com/show_bug.cgi?id=2280434
https://bugzilla.redhat.com/show_bug.cgi?id=2281127
https://bugzilla.redhat.com/show_bug.cgi?id=2281669
https://bugzilla.redhat.com/show_bug.cgi?id=2281672
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=2297562
https://bugzilla.redhat.com/show_bug.cgi?id=2298108
https://bugzilla.redhat.com/show_bug.cgi?id=2299240
https://bugzilla.redhat.com/show_bug.cgi?id=2299336