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firmware: coreboot: Validate table bounds

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-90341

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-90341

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "d384d6f43d1ec3f1225ab0275fd592c5980bd830",
        "lessThan": "3cca0d6dd4c2636d2514234233cb02db76621607",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d384d6f43d1ec3f1225ab0275fd592c5980bd830",
        "lessThan": "f79f621215a0944c4a0e1b3b86b99e433ae8c527",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d384d6f43d1ec3f1225ab0275fd592c5980bd830",
        "lessThan": "d848fac90c6f0566e7b93066b0b86024f65f395e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d384d6f43d1ec3f1225ab0275fd592c5980bd830",
        "lessThan": "88027241c1d2c3213bac937a1c2cb89a5775a413",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d384d6f43d1ec3f1225ab0275fd592c5980bd830",
        "lessThan": "fd93859ecfa5b6495a6863c18fd923a7666def26",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d384d6f43d1ec3f1225ab0275fd592c5980bd830",
        "lessThan": "2d98a3b89394f283f054a4a54587c14ee89acaf9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d384d6f43d1ec3f1225ab0275fd592c5980bd830",
        "lessThan": "e82f260a74dea8cdd7857f2cc66f73d0da522bb3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d384d6f43d1ec3f1225ab0275fd592c5980bd830",
        "lessThan": "a58a57a1076f8c5dae0327e3710899478c3be901",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/firmware/google/coreboot_table.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.12"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.12",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/firmware/google/coreboot_table.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90341

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#36681 · Revision 1
Added to Heist Feed
Publisher date
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