CVE-2026-80747

Summary

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

drm/amdkfd: Add bounds check for CRAT subtype length

The CRAT parser validates that the subtype header fits within the image, but does not verify that the advertised subtype length fits. A malformed CRAT table with an oversized length field causes out-of-bounds reads when kfd_parse_subtype() casts the header to specific subtype structures.

Add validation that sub_type_hdr + length does not exceed the image boundary before parsing the subtype contents.

(cherry picked from commit 48e1d1e6e8798aef0312e68d8e586021b5b3cf4d)

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5b5c4e40a37e858e2bff8cd91be8e972256392c4 < ca91e0cc8087568e4b791648a7c01e804f48cb73affected
LinuxLinux5b5c4e40a37e858e2bff8cd91be8e972256392c4 < 6e7566ba4739dd573c331adde1c96690f7a567bdaffected
LinuxLinux3.19affected
LinuxLinux0 < 3.19unaffected
LinuxLinux7.1.10 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References