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thunderbolt: Bound root directory content to block size

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Bound root directory content to block size __tb_property_parse_dir() does not check that content_offset + content_len fits within block_len for the root directory case. When rootdir->length equals or exceeds block_len - 2, the entry loop reads past the allocated property block. Add a bounds check after computing content_offset and content_len to reject directories whose content extends past the block.

Announced Source revision 1
Original source ↗

CVE-2026-53149

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-2026-53149

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": "5c7657d38d07268124782f03519f07c22a5814fb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "b212bc161d8a9937b42153723a4a3f2f74fab528",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "1912be23daf4afc8d24ce916021ab68ca4c679db",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "4d0b1524caadb04c10a71f3f88692c63dcb39115",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "0a32040a48db8cf35de48b85d6115df5623e4964",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "60ba6217460792356a238299edd675d91d46bab4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "cbeb68cbaa0a6f979ef428a7f2d0268c082ba166",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "65423079c7420e3dbf9a7aa345c243a3f5752e5d",
        "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-2026-53149

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#28430 · Revision 1
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Publisher date
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