Bug 2301490 (CVE-2024-42125)

Summary: CVE-2024-42125 kernel: wifi: rtw89: fw: scan offload prohibit all 6 GHz channel if no 6 GHz sband
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, nmurray, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 6.9.9, kernel 6.10 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel's rtw89 driver function rtw89_scan_get_6g_disabled_chan() caused by its handling of 6 GHz band channels during scans. A lack of proper sband checks can lead to a situation where the sband is not available due to device limitations/restrictions set by the BIOS and this leads to a NULL pointer dereference. This can lead to system instability or crashes.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2301805    
Bug Blocks:    

Description OSIDB Bzimport 2024-07-30 08:34:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw89: fw: scan offload prohibit all 6 GHz channel if no 6 GHz sband

We have some policy via BIOS to block uses of 6 GHz. In this case, 6 GHz
sband will be NULL even if it is WiFi 7 chip. So, add NULL handling here
to avoid crash.
Comment 1 Mauro Matteo Cascella 2024-07-30 19:33:36 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024073026-CVE-2024-42125-b515@gregkh/T
Comment 2 Mauro Matteo Cascella 2024-07-30 19:33:59 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301805]
Comment 11 errata-xmlrpc 2024-11-12 09:37:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315