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thunderbolt: Reject zero-length property entries in validator

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Reject zero-length property entries in validator tb_property_entry_valid() accepts entries with length == 0 for DIRECTORY, DATA, and TEXT types. A zero-length TEXT entry passes validation but causes an underflow in the null-termination logic: property->value.text[property->length * 4 - 1] = '\0'; When property->length is 0 this writes to offset -1 relative to the allocation. Reject zero-length entries early in the validator since they have no valid representation in the XDomain property protocol.

Announced Source revision 1
Original source ↗

CVE-2026-53150

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-2026-53150

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": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "581c2053ab4dbe27e83c9e62deb4c73aa8dc0c3a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "35d6c9252a152e756768a26dbf216b9dd9dd8e92",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "99d9dbad1463afb510d42c9714f846361d1b726d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "5f56bc6bddffe8710ba0ba8844023b5a44ca90e4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "ca11e7da4fba4b394f69e16448f4463c44c84de6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "2e0ddac549ebd713eb9f4a15b6496e3440a17d8b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "3b6e68cb97f725385010264a873e14a3921b6b8a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "cff8eb65d1eafe7793e54b4d0cf6bf831644630b",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/thunderbolt/property.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.15"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.15",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.259",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.210",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.176",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.143",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.94",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.36",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.13",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/thunderbolt/property.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-53150

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#28431 · Revision 1
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Publisher date
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