Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d384d6f43d1ec3f1225ab0275fd592c5980bd830 before 3cca0d6dd4c2636d2514234233cb02db76621607; affected d384d6f43d1ec3f1225ab0275fd592c5980bd830 before f79f621215a0944c4a0e1b3b86b99e433ae8c527; affected d384d6f43d1ec3f1225ab0275fd592c5980bd830 before d848fac90c6f0566e7b93066b0b86024f65f395e; affected d384d6f43d1ec3f1225ab0275fd592c5980bd830 before 88027241c1d2c3213bac937a1c2cb89a5775a413; affected d384d6f43d1ec3f1225ab0275fd592c5980bd830 before fd93859ecfa5b6495a6863c18fd923a7666def26; affected d384d6f43d1ec3f1225ab0275fd592c5980bd830 before 2d98a3b89394f283f054a4a54587c14ee89acaf9; affected d384d6f43d1ec3f1225ab0275fd592c5980bd830 before e82f260a74dea8cdd7857f2cc66f73d0da522bb3; affected d384d6f43d1ec3f1225ab0275fd592c5980bd830 before a58a57a1076f8c5dae0327e3710899478c3be901 |
| Linux / Linux | affected 4.12; unaffected 0 before 4.12; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3cca0d6dd4c2636d2514234233cb02db76621607
- https://git.kernel.org/stable/c/f79f621215a0944c4a0e1b3b86b99e433ae8c527
- https://git.kernel.org/stable/c/d848fac90c6f0566e7b93066b0b86024f65f395e
- https://git.kernel.org/stable/c/88027241c1d2c3213bac937a1c2cb89a5775a413
- https://git.kernel.org/stable/c/fd93859ecfa5b6495a6863c18fd923a7666def26
- https://git.kernel.org/stable/c/2d98a3b89394f283f054a4a54587c14ee89acaf9
- https://git.kernel.org/stable/c/e82f260a74dea8cdd7857f2cc66f73d0da522bb3
- https://git.kernel.org/stable/c/a58a57a1076f8c5dae0327e3710899478c3be901