CVE-2026-68106

Summary

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)

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 52f9a588296432accf2982f7d258192a37562f4faffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a00946b5ab7c25da5685ca9c58f50ff6f43c0fdfaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ffb33d466a68cea3e8a3dbed04d79037a3cbabd1affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < be725ab23aa45c11a5afef3e2a9f6d8c084ae5dcaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0c01c811be47e6b146552dd59bfedbea8f09b8f4affected
LinuxLinux0 < 6.6.148affected
LinuxLinux0 < 6.12.101affected
LinuxLinux0 < 6.18.42affected
LinuxLinux0 < 7.1.6affected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2-rc2 <= *unaffected

Weaknesses

References