CVE-2025-68747
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Publication date: 2025-12-24

Last updated on: 2025-12-29

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix UAF on kernel BO VA nodes If the MMU is down, panthor_vm_unmap_range() might return an error. We expect the page table to be updated still, and if the MMU is blocked, the rest of the GPU should be blocked too, so no risk of accessing physical memory returned to the system (which the current code doesn't cover for anyway). Proceed with the rest of the cleanup instead of bailing out and leaving the va_node inserted in the drm_mm, which leads to UAF when other adjacent nodes are removed from the drm_mm tree.
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Meta Information
Published
2025-12-24
Last Modified
2025-12-29
Generated
2026-06-16
AI Q&A
2025-12-24
EPSS Evaluated
2026-06-15
NVD
CVE-2025-68747
EUVD
EUVD-2025-205215
Affected Vendors & Products
Currently, no data is known.
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a Use-After-Free (UAF) issue in the Linux kernel's drm/panthor component related to kernel buffer object virtual address (VA) nodes. When the Memory Management Unit (MMU) is down, a function called panthor_vm_unmap_range() might return an error, but the code does not properly handle this case and leaves a VA node inserted in the drm_mm memory manager. This can lead to a UAF condition when adjacent nodes are removed, potentially causing memory corruption or instability.

Impact Analysis

The vulnerability can lead to a Use-After-Free condition in the kernel memory management, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges by exploiting the corrupted memory state.

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