drm/amdgpu: fix division by zero with invalid uvd dimensions
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: fix division by zero with invalid uvd dimensions
When width or height is less than 16, width_in_mb or height_in_mb
becomes 0, leading to fs_in_mb being 0. This causes a division by
zero when calculating num_dpb_buffer in H264 and H264 Perf decode
paths.
Add validation to reject frames with width < 16 or height < 16
before performing any calculations that depend on these values.
V2: Format change - move up all vaiable definitions.
V3: Use warn_once to avoid spam.
(cherry picked from commit 3e41d26c70b0a459d041cc19482a226c4b7423cb)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/004d0453cfef16f056cb7b8bc04f69f19cf9df32https://git.kernel.org/stable/c/00ee64910ecf748cc15b23bbcbea472c203ec1e8https://git.kernel.org/stable/c/0c01c811be47e6b146552dd59bfedbea8f09b8f4https://git.kernel.org/stable/c/52f9a588296432accf2982f7d258192a37562f4fhttps://git.kernel.org/stable/c/81c9b4921f62d1642b9d775524ae9240e521a5edhttps://git.kernel.org/stable/c/a00946b5ab7c25da5685ca9c58f50ff6f43c0fdfhttps://git.kernel.org/stable/c/be725ab23aa45c11a5afef3e2a9f6d8c084ae5dchttps://git.kernel.org/stable/c/ffb33d466a68cea3e8a3dbed04d79037a3cbabd1