Bug 2320485 (CVE-2024-49907) - CVE-2024-49907 kernel: drm/amd/display: Check null pointers before using dc->clk_mgr
Summary: CVE-2024-49907 kernel: drm/amd/display: Check null pointers before using dc-&...
Keywords:
Status: NEW
Alias: CVE-2024-49907
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: 2320954
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-10-21 19:05 UTC by OSIDB Bzimport
Modified: 2024-10-22 12:47 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2024-10-21 19:05:10 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Check null pointers before using dc->clk_mgr

[WHY & HOW]
dc->clk_mgr is null checked previously in the same function, indicating
it might be null.

Passing "dc" to "dc->hwss.apply_idle_power_optimizations", which
dereferences null "dc->clk_mgr". (The function pointer resolves to
"dcn35_apply_idle_power_optimizations".)

This fixes 1 FORWARD_NULL issue reported by Coverity.
Comment 1 Michal Findra 2024-10-22 12:15:34 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102121-CVE-2024-49907-d177@gregkh/T
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