Bug 2540425 (CVE-2026-97427) - CVE-2026-97427 kernel: drm/amd/pm: bound pp_dpm_set_pp_table() memcpy
Summary: CVE-2026-97427 kernel: drm/amd/pm: bound pp_dpm_set_pp_table() memcpy
Keywords:
Status: NEW
Alias: CVE-2026-97427
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:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 16:46 UTC by OSIDB Bzimport
Modified: 2026-09-29 12:15 UTC (History)
17 users (show)

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


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Description OSIDB Bzimport 2026-09-24 16:46:47 UTC
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/pm: bound pp_dpm_set_pp_table() memcpy

The powerplay path allocates hardcode_pp_table once with kmemdup(...,
soft_pp_table_size). memcpy(..., size) used the sysfs store count (up to
PAGE_SIZE) with no upper bound, causing heap overflow. Reject
writes where size exceeds soft_pp_table_size.


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