Answer in brief
CVE-2026-90341 records a High severity (CVSS 7.7) vulnerability in firmware: coreboot: Validate table bounds. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d384d6f43d1ec3f1225ab0275fd592c5980bd830 <3cca0d6dd4c2636d2514234233cb02db76621607 || >=d384d6f43d1ec3f1225ab0275fd592c5980bd830 <f79f621215a0944c4a0e1b3b86b99e433ae8c527 || >=d384d6f43d1ec3f1225ab0275fd592c5980bd830 <d848fac90c6f0566e7b93066b0b86024f65f395e || >=d384d6f43d1ec3f1225ab0275fd592c5980bd830 <88027241c1d2c3213bac937a1c2cb89a5775a413 || >=d384d6f43d1ec3f1225ab0275fd592c5980bd830 <fd93859ecfa5b6495a6863c18fd923a7666def26 || >=d384d6f43d1ec3f1225ab0275fd592c5980bd830 <2d98a3b89394f283f054a4a54587c14ee89acaf9 || >=d384d6f43d1ec3f1225ab0275fd592c5980bd830 <e82f260a74dea8cdd7857f2cc66f73d0da522bb3 || >=d384d6f43d1ec3f1225ab0275fd592c5980bd830 <a58a57a1076f8c5dae0327e3710899478c3be901 | 3cca0d6dd4c2636d2514234233cb02db76621607, f79f621215a0944c4a0e1b3b86b99e433ae8c527, d848fac90c6f0566e7b93066b0b86024f65f395e, 88027241c1d2c3213bac937a1c2cb89a5775a413, fd93859ecfa5b6495a6863c18fd923a7666def26, 2d98a3b89394f283f054a4a54587c14ee89acaf9, e82f260a74dea8cdd7857f2cc66f73d0da522bb3, a58a57a1076f8c5dae0327e3710899478c3be901 |
| Linux/Linuxgeneric | 4.12 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.