The following advisory data is extracted from:

https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_2490.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 security update
Advisory ID:        RHSA-2025:2490-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2025:2490
Issue date:         2025-03-10
Revision:           03
CVE Names:          CVE-2021-47497
====================================================================

Summary: 

An update for kernel is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.

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: x86/fpu: Stop relying on userspace for info to fault in xsave buffer that cause loop forever (CVE-2024-26603)

* kernel: platform/x86: think-lmi: Fix reference leak (CVE-2023-52520)

* kernel: hwrng: core - Fix page fault dead lock on mmap-ed hwrng (CVE-2023-52615)

* kernel: RDMA/srpt: Support specifying the srpt_service_guid parameter (CVE-2024-26744)

* kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)

* kernel: nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells (CVE-2021-47497)

* kernel: leds: trigger: Unregister sysfs attributes before calling deactivate() (CVE-2024-43830)

* kernel: HID: core: zero-initialize the report buffer (CVE-2024-50302)

* kernel: can: bcm: Fix UAF in bcm_proc_show() (CVE-2023-52922)

* kernel: ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices (CVE-2024-53197)

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-2021-47497

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2265833
https://bugzilla.redhat.com/show_bug.cgi?id=2267797
https://bugzilla.redhat.com/show_bug.cgi?id=2270093
https://bugzilla.redhat.com/show_bug.cgi?id=2273260
https://bugzilla.redhat.com/show_bug.cgi?id=2281235
https://bugzilla.redhat.com/show_bug.cgi?id=2282918
https://bugzilla.redhat.com/show_bug.cgi?id=2327169
https://bugzilla.redhat.com/show_bug.cgi?id=2329370
https://bugzilla.redhat.com/show_bug.cgi?id=2334412