CVE-2026-80747 PUBLISHED

drm/amdkfd: Add bounds check for CRAT subtype length

Assigner: Linux
Reserved: 26.08.2026 Published: 03.09.2026 Updated: 03.09.2026

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)

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to ca91e0cc8087568e4b791648a7c01e804f48cb73 (excl.)
  • affected from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to 6e7566ba4739dd573c331adde1c96690f7a567bd (excl.)
  • affected from 0 to 7.1.10 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • unaffected from 7.1.10 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References