CVE-2026-80747
Published: September 8, 2026Last modified: October 23, 2026
Description
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)
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | LOW |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.182-r0) |
| 25 LTS | linux-lts | Vulnerable (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.58-r0) |
References
- https://git.kernel.org/stable/c/69164d6bdad5d6657e51436a3f602822f620a46a
- https://git.kernel.org/stable/c/6e7566ba4739dd573c331adde1c96690f7a567bd
- https://git.kernel.org/stable/c/77b659fb104eb069ea7a61960699e4d1eea6567a
- https://git.kernel.org/stable/c/ca91e0cc8087568e4b791648a7c01e804f48cb73
- https://git.kernel.org/stable/c/fef8c8afcb85dce5ff115f82a148cdf87a9617b9