Description
In the Linux kernel, the following vulnerability has been resolved:
firmware: coreboot: Validate table bounds
The existing coreboot_table_populate() bounds checks limit individual entries to the mapped length. However, coreboot_table_probe() replaces the platform resource length with header and table sizes supplied by firmware before mapping the full table.
A malformed table can overflow the 32-bit size addition or advertise an extent beyond the resource, causing the driver to map and parse memory outside the resource. A resource shorter than the fixed header is also mapped as though it contained a complete header.
Reject resources shorter than the fixed header. After validating the signature, require a complete header, calculate the advertised extent with overflow checking, and reject extents beyond the resource before remapping the table.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < 3cca0d6dd4c2636d2514234233cb02db76621607; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < f79f621215a0944c4a0e1b3b86b99e433ae8c527; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < d848fac90c6f0566e7b93066b0b86024f65f395e; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < 88027241c1d2c3213bac937a1c2cb89a5775a413; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < fd93859ecfa5b6495a6863c18fd923a7666def26; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < 2d98a3b89394f283f054a4a54587c14ee89acaf9; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < e82f260a74dea8cdd7857f2cc66f73d0da522bb3; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < a58a57a1076f8c5dae0327e3710899478c3be901 |
| Linux | Linux | 4.12 |
References
- https://git.kernel.org/stable/c/2d98a3b89394f283f054a4a54587c14ee89acaf9
- https://git.kernel.org/stable/c/3cca0d6dd4c2636d2514234233cb02db76621607
- https://git.kernel.org/stable/c/88027241c1d2c3213bac937a1c2cb89a5775a413
- https://git.kernel.org/stable/c/a58a57a1076f8c5dae0327e3710899478c3be901
- https://git.kernel.org/stable/c/d848fac90c6f0566e7b93066b0b86024f65f395e
- https://git.kernel.org/stable/c/e82f260a74dea8cdd7857f2cc66f73d0da522bb3
- https://git.kernel.org/stable/c/f79f621215a0944c4a0e1b3b86b99e433ae8c527
- https://git.kernel.org/stable/c/fd93859ecfa5b6495a6863c18fd923a7666def26
Timeline
- Published
- Sep 17, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received