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How the CVE works:
The vulnerability resides in the GPU pdma (Physical Direct Memory Access) component of MediaTek graphics processors. A missing bounds check in the DMA operation handling allows for out-of-bounds memory reads. When processing DMA requests, the GPU fails to validate buffer boundaries, permitting unauthorized access to adjacent memory regions. An attacker can exploit this by crafting malicious IOCTL calls through a local application, triggering the vulnerable pdma path. This leads to information disclosure from kernel memory or other processes, potentially leaking sensitive data like graphics buffers or authentication tokens. User interaction is required, such as convincing a user to execute a malicious app. No additional privileges are needed, making any local user a potential threat. The root cause is insufficient input validation in the pdma engine, highlighting secure DMA implementation flaws. Patch ID ALPS10117741 addresses this issue, tracked as MSV-4538.
Platform: MediaTek GPU
Version: Not specified
Vulnerability: Information disclosure
Severity: Medium
Date: 12/01/2025
Prediction: Patch released 12/01/2025
What Undercode Say:
Analytics:
Check GPU driver
dmesg | grep media
Scan pdma components
grep -r pdma /sys/class/gpu/
Hypothetical vulnerable code
void pdma_read(void dst, size_t len) {
// Missing bounds check
copy_from_user(dst, user_buf, len);
}
How Exploit:
Local malicious app triggers out-of-bounds DMA read via IOCTL, leaking kernel memory.
Protection from this CVE:
Apply patch ALPS10117741, update GPU drivers, restrict local access.
Impact:
Local information disclosure, data leakage, no privilege escalation.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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