Bug 2320269 (CVE-2024-47704) - CVE-2024-47704 kernel: drm/amd/display: Check link_res->hpo_dp_link_enc before using it
Summary: CVE-2024-47704 kernel: drm/amd/display: Check link_res->hpo_dp_link_enc be...
Keywords:
Status: NEW
Alias: CVE-2024-47704
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2320346
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-10-21 13:07 UTC by OSIDB Bzimport
Modified: 2024-10-21 20:36 UTC (History)
4 users (show)

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

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Description OSIDB Bzimport 2024-10-21 13:07:05 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check link_res->hpo_dp_link_enc before using it

[WHAT & HOW]
Functions dp_enable_link_phy and dp_disable_link_phy can pass link_res
without initializing hpo_dp_link_enc and it is necessary to check for
null before dereferencing.

This fixes 2 FORWARD_NULL issues reported by Coverity.
Comment 1 Robb Gatica 2024-10-21 15:06:54 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102116-CVE-2024-47704-d937@gregkh/T
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