HIGH 7.8 NVD
CVE-2026-89825
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: fix firmware control interface bounds checks panthor_init_cs_iface() and pant
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.
References
- https://git.kernel.org/stable/c/33ae55809aee9b4dca1d00cdee35b527f2bf8626
- https://git.kernel.org/stable/c/3e5c7cddc0073eef6f9bb373189b11a969f1f6f6
- https://git.kernel.org/stable/c/6a47f9fd2d970674ed9dedc52fc7ab76fd015785
- https://git.kernel.org/stable/c/80c9528661c774f899281c9a72011208ff39929e
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-09-16 via NVD.
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