Bug 2301464 (CVE-2024-42101)

Summary: CVE-2024-42101 kernel: drm/nouveau: fix null pointer dereference in nouveau_connector_get_modes
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, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 4.19.318, kernel 5.4.280, kernel 5.10.222, kernel 5.15.163, kernel 6.1.98, kernel 6.6.39, kernel 6.9.9, kernel 6.10 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel’s nouveau module. The return value of the drm_mode_duplicate function is not checked in the nouveau_connector_get_modes function in the drivers/gpu/drm/nouveau/nouveau_connector.c file, possibly causing a NULL pointer dereference and resulting in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2301759    
Bug Blocks:    

Description OSIDB Bzimport 2024-07-30 08:20:53 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/nouveau: fix null pointer dereference in nouveau_connector_get_modes

In nouveau_connector_get_modes(), the return value of drm_mode_duplicate()
is assigned to mode, which will lead to a possible NULL pointer
dereference on failure of drm_mode_duplicate(). Add a check to avoid npd.
Comment 1 Mauro Matteo Cascella 2024-07-30 18:12:59 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024073018-CVE-2024-42101-f246@gregkh/T
Comment 2 Mauro Matteo Cascella 2024-07-30 18:13:21 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301759]
Comment 11 errata-xmlrpc 2024-11-12 09:37:32 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