Out-of-Bounds Write in Samsung Exynos NPU Driver
CVE-2025-23107 is a high-severity out-of-bounds write vulnerability in the Samsung Exynos NPU driver affecting Exynos 1480 and Exynos 2400 platforms. The flaw is caused by a missing length check in the fill_vs4l_buffer function. That function copies reserved buffer metadata from the kernel-side queue_list back into a user-supplied vs4l_container_list structure, but iterates using kernel-side counts without verifying that the destination user-supplied container arrays are large enough. As a result, if c->count is smaller than queue_list->count, or if c->containers[i].count is smaller than queue_list->containers[i].count, the function can write past the end of the supplied buffer. The issue is reachable from the untrusted_app SELinux context and was demonstrated on Samsung Galaxy S24+ devices running Android 14, enabling local privilege escalation.
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Exploits
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Recent activity
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Cross-references every affected SKU, including bundled OEM variants.
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