The following advisory data is extracted from:

https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_14094.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-2025:14094-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2025:14094
Issue date:         2025-08-20
Revision:           03
CVE Names:          CVE-2022-50020
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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 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: padata: fix UAF in padata_reorder (CVE-2025-21727)

* kernel: x86/microcode/AMD: Fix out-of-bounds on systems with CPU-less NUMA nodes (CVE-2025-21991)

* kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)

* kernel: net_sched: hfsc: Fix a UAF vulnerability in class handling (CVE-2025-37797)

* kernel: selinux: Add boundary check in put_entry() (CVE-2022-50200)

* kernel: ext4: avoid resizing to a partial cluster size (CVE-2022-50020)

* kernel: drivers:md:fix a potential use-after-free bug (CVE-2022-50022)

* kernel: net: ch9200: fix uninitialised access during mii_nway_restart (CVE-2025-38086)

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-2022-50020

References:

https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=2348516
https://bugzilla.redhat.com/show_bug.cgi?id=2356917
https://bugzilla.redhat.com/show_bug.cgi?id=2360099
https://bugzilla.redhat.com/show_bug.cgi?id=2363672
https://bugzilla.redhat.com/show_bug.cgi?id=2373605
https://bugzilla.redhat.com/show_bug.cgi?id=2373630
https://bugzilla.redhat.com/show_bug.cgi?id=2373672
https://bugzilla.redhat.com/show_bug.cgi?id=2375305