CVE-2026-90341firmware: coreboot: Validate table bounds
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from d384d6f43d1ec3f1225ab0275fd592c5980bd830 before 3cca0d6dd4c2636d2514234233cb02db76621607; from d384d6f43d1ec3f1225ab0275fd592c5980bd830 before f79f621215a0944c4a0e1b3b86b99e433ae8c527; from d384d6f43d1ec3f1225ab0275fd592c5980bd830 before d848fac90c6f0566e7b93066b0b86024f65f395e; from d384d6f43d1ec3f1225ab0275fd592c5980bd830 before 88027241c1d2c3213bac937a1c2cb89a5775a413; from d384d6f43d1ec3f1225ab0275fd592c5980bd830 before fd93859ecfa5b6495a6863c18fd923a7666def26; from d384d6f43d1ec3f1225ab0275fd592c5980bd830 before 2d98a3b89394f283f054a4a54587c14ee89acaf9; from d384d6f43d1ec3f1225ab0275fd592c5980bd830 before e82f260a74dea8cdd7857f2cc66f73d0da522bb3; from d384d6f43d1ec3f1225ab0275fd592c5980bd830 before a58a57a1076f8c5dae0327e3710899478c3be901 | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.