The following advisory data is extracted from:

https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_9080.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-2025:9080-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2025:9080
Issue date:         2025-06-16
Revision:           03
CVE Names:          CVE-2025-21961
====================================================================

Summary: 

An update for kernel is now available for Red Hat Enterprise Linux 9.

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: eth: bnxt: fix truesize for mb-xdp-pass case (CVE-2025-21961)

* kernel: Bluetooth: L2CAP: Fix slab-use-after-free Read in l2cap_send_cmd (CVE-2025-21969)

* kernel: cifs: Fix integer overflow while processing acdirmax mount option (CVE-2025-21963)

* kernel: wifi: cfg80211: cancel wiphy_work before freeing wiphy (CVE-2025-21979)

* kernel: proc: fix UAF in proc_get_inode() (CVE-2025-21999)

* kernel: md: fix mddev uaf while iterating all_mddevs list (CVE-2025-22126)

* kernel: smb: client: fix UAF in decryption with multichannel (CVE-2025-37750)

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-2025-21961

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2356584
https://bugzilla.redhat.com/show_bug.cgi?id=2356633
https://bugzilla.redhat.com/show_bug.cgi?id=2356642
https://bugzilla.redhat.com/show_bug.cgi?id=2356652
https://bugzilla.redhat.com/show_bug.cgi?id=2357134
https://bugzilla.redhat.com/show_bug.cgi?id=2360236
https://bugzilla.redhat.com/show_bug.cgi?id=2363341