Bug 2467014 (CVE-2026-43110) - CVE-2026-43110 kernel: wifi: brcmfmac: validate bsscfg indices in IF events
Summary: CVE-2026-43110 kernel: wifi: brcmfmac: validate bsscfg indices in IF events
Keywords:
Status: NEW
Alias: CVE-2026-43110
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-06 10:03 UTC by OSIDB Bzimport
Modified: 2026-07-17 12:52 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:21556 0 None None None 2026-05-28 01:24:09 UTC
Red Hat Product Errata RHSA-2026:21557 0 None None None 2026-05-28 01:20:04 UTC
Red Hat Product Errata RHSA-2026:23237 0 None None None 2026-06-04 10:22:45 UTC
Red Hat Product Errata RHSA-2026:24343 0 None None None 2026-06-08 03:03:32 UTC
Red Hat Product Errata RHSA-2026:25218 0 None None None 2026-06-11 10:53:56 UTC
Red Hat Product Errata RHSA-2026:25533 0 None None None 2026-06-12 19:51:49 UTC
Red Hat Product Errata RHSA-2026:26427 0 None None None 2026-06-16 18:55:34 UTC
Red Hat Product Errata RHSA-2026:26428 0 None None None 2026-06-16 18:29:40 UTC
Red Hat Product Errata RHSA-2026:26462 0 None None None 2026-06-17 01:14:01 UTC
Red Hat Product Errata RHSA-2026:26535 0 None None None 2026-06-17 09:18:48 UTC
Red Hat Product Errata RHSA-2026:26563 0 None None None 2026-06-17 11:58:33 UTC
Red Hat Product Errata RHSA-2026:27729 0 None None None 2026-06-22 04:26:57 UTC
Red Hat Product Errata RHSA-2026:41236 0 None None None 2026-07-17 12:52:28 UTC

Description OSIDB Bzimport 2026-05-06 10:03:13 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: brcmfmac: validate bsscfg indices in IF events

brcmf_fweh_handle_if_event() validates the firmware-provided interface
index before it touches drvr->iflist[], but it still uses the raw
bsscfgidx field as an array index without a matching range check.

Reject IF events whose bsscfg index does not fit in drvr->iflist[]
before indexing the interface array.

[add missing wifi prefix]
Comment 1 Alexander B 2026-05-06 13:47:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050624-CVE-2026-43110-7309@gregkh/T
Comment 4 errata-xmlrpc 2026-05-28 01:20:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:21557 https://access.redhat.com/errata/RHSA-2026:21557
Comment 5 errata-xmlrpc 2026-05-28 01:24:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:21556 https://access.redhat.com/errata/RHSA-2026:21556
Comment 6 errata-xmlrpc 2026-06-04 10:22:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:23237 https://access.redhat.com/errata/RHSA-2026:23237
Comment 7 errata-xmlrpc 2026-06-08 03:03:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:24343 https://access.redhat.com/errata/RHSA-2026:24343
Comment 8 errata-xmlrpc 2026-06-11 10:53:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:25218 https://access.redhat.com/errata/RHSA-2026:25218
Comment 9 errata-xmlrpc 2026-06-12 19:51:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Via RHSA-2026:25533 https://access.redhat.com/errata/RHSA-2026:25533
Comment 10 errata-xmlrpc 2026-06-16 18:29:39 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:26428 https://access.redhat.com/errata/RHSA-2026:26428
Comment 11 errata-xmlrpc 2026-06-16 18:55:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:26427 https://access.redhat.com/errata/RHSA-2026:26427
Comment 12 errata-xmlrpc 2026-06-17 01:14:00 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:26462 https://access.redhat.com/errata/RHSA-2026:26462
Comment 13 errata-xmlrpc 2026-06-17 09:18:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:26535 https://access.redhat.com/errata/RHSA-2026:26535
Comment 14 errata-xmlrpc 2026-06-17 11:58:32 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:26563 https://access.redhat.com/errata/RHSA-2026:26563
Comment 15 errata-xmlrpc 2026-06-22 04:26:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:27729 https://access.redhat.com/errata/RHSA-2026:27729
Comment 19 errata-xmlrpc 2026-07-17 12:52:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:41236 https://access.redhat.com/errata/RHSA-2026:41236
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