CVE-2026-68108

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/vce: fix integer overflow in image size

Fix a security vulnerability where malicious VCE command streams with oversized dimensions (e.g. 65536×65536) cause 32-bit integer overflow, wrapping the calculated buffer size to 0. This bypasses validation and allows GPU firmware to perform out-of-bound memory access.

The fix uses 64-bit arithmetic to detect overflow and rejects invalid dimensions before they reach the hardware.

V2: remove redundant check V3: modify max height value V4: remove size64

(cherry picked from commit cbe408dba581755ad1279a487ec786d8927d778d)

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a07430abd556de3707adfcadcc60db3fa64e4b2baffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a6d7065b91a14790980ce6f4960db0ca8c3c9940affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7eebef042c12dfe0568593ee6a8926d16505925eaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 00c311a13d225266800c712f2b7db2711c6897deaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 186bfdc4e26d019b2e7570cb121964a1d89b2e5baffected
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