CVE-2026-89825
Description
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: fix firmware control interface bounds checks panthor_init_cs_iface() and panthor_init_csg_iface() validate firmware control interface offsets with 32-bit arithmetic and the size of the host wrapper structures. The offsets are derived from firmware-provided strides, so the arithmetic can wrap before the bounds check, and the host wrapper size is not the size of the firmware control interface being mapped. Use 64-bit arithmetic for the computed offsets and validate against the actual firmware control interface structure sizes with subtraction-based bounds checks. Also validate that the shared section is large enough for the global control interface before using it.
How to fix
- Linux Linux33ae55809aee9b4dca1d00cdee35b527f2bf8626, 80c9528661c774f899281c9a72011208ff39929e, 3e5c7cddc0073eef6f9bb373189b11a969f1f6f6, 6a47f9fd2d970674ed9dedc52fc7ab76fd015785 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 2718d91816eeed03c09c8abe872e45f59078768c ≤ v < 33ae55809aee9b4dca1d00cdee35b527f2bf8626, 2718d91816eeed03c09c8abe872e45f59078768c ≤ v < 80c9528661c774f899281c9a72011208ff39929e, 2718d91816eeed03c09c8abe872e45f59078768c ≤ v < 3e5c7cddc0073eef6f9bb373189b11a969f1f6f6, 2718d91816eeed03c09c8abe872e45f59078768c ≤ v < 6a47f9fd2d970674ed9dedc52fc7ab76fd015785, 6.10 | 33ae55809aee9b4dca1d00cdee35b527f2bf8626, 80c9528661c774f899281c9a72011208ff39929e, 3e5c7cddc0073eef6f9bb373189b11a969f1f6f6, 6a47f9fd2d970674ed9dedc52fc7ab76fd015785 |
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