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CVE-2026-90341

firmware: coreboot: Validate table bounds

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From d384d6f43d1ec3f1225ab0275fd592c5980bd830 · fixed in 3cca0d6dd4c2636d2514234233cb02db76621607; From d384d6f43d1ec3f1225ab0275fd592c5980bd830 · fixed in f79f621215a0944c4a0e1b3b86b99e433ae8c527; From d384d6f43d1ec3f1225ab0275fd592c5980bd830 · fixed in d848fac90c6f0566e7b93066b0b86024f65f395e; From d384d6f43d1ec3f1225ab0275fd592c5980bd830 · fixed in 88027241c1d2c3213bac937a1c2cb89a5775a413; From d384d6f43d1ec3f1225ab0275fd592c5980bd830 · fixed in fd93859ecfa5b6495a6863c18fd923a7666def26; From d384d6f43d1ec3f1225ab0275fd592c5980bd830 · fixed in 2d98a3b89394f283f054a4a54587c14ee89acaf9; From d384d6f43d1ec3f1225ab0275fd592c5980bd830 · fixed in e82f260a74dea8cdd7857f2cc66f73d0da522bb3; From d384d6f43d1ec3f1225ab0275fd592c5980bd830 · fixed in a58a57a1076f8c5dae0327e3710899478c3be901

  • Linux Linux

    4.12

  • KernelLinux

    From 4.12.0 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.6

References 8

git.kernel.org