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CVE-2026-90341

HIGHCVSS 7.7/10

Last modified

CVE-2026-90341 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. 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.

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
7.7/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < 3cca0d6dd4c2636d2514234233cb02db76621607; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < f79f621215a0944c4a0e1b3b86b99e433ae8c527; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < d848fac90c6f0566e7b93066b0b86024f65f395e; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < 88027241c1d2c3213bac937a1c2cb89a5775a413; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < fd93859ecfa5b6495a6863c18fd923a7666def26; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < 2d98a3b89394f283f054a4a54587c14ee89acaf9; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < e82f260a74dea8cdd7857f2cc66f73d0da522bb3; >= d384d6f43d1ec3f1225ab0275fd592c5980bd830, < a58a57a1076f8c5dae0327e3710899478c3be901
LinuxLinux4.12

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90341?
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.
How severe is CVE-2026-90341?
CVE-2026-90341 has a CVSS score of 7.7/10 (HIGH severity).
How do I fix CVE-2026-90341?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST