Bug 2482055 (CVE-2026-45947)

Summary: CVE-2026-45947 kernel: drm/amdgpu: Fix memory leak in amdgpu_acpi_enumerate_xcc()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's AMD GPU display (drm/amdgpu) component. This vulnerability involves a memory leak within the amdgpu_acpi_enumerate_xcc() function. When certain errors occur during the initialization process, the system fails to properly release allocated memory. This oversight can lead to a gradual depletion of system resources, potentially impacting overall system performance and stability.
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Description OSIDB Bzimport 2026-05-27 15:09:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: Fix memory leak in amdgpu_acpi_enumerate_xcc()

In amdgpu_acpi_enumerate_xcc(), if amdgpu_acpi_dev_init() returns -ENOMEM,
the function returns directly without releasing the allocated xcc_info,
resulting in a memory leak.

Fix this by ensuring that xcc_info is properly freed in the error paths.

Compile tested only. Issue found using a prototype static analysis tool
and code review.
Comment 1 Keith Grant 2026-05-27 23:55:41 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052730-CVE-2026-45947-aad9@gregkh/T