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thunderbolt: Limit XDomain response copy to actual frame size

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Limit XDomain response copy to actual frame size tb_xdomain_copy() copies req->response_size bytes from the received packet buffer regardless of the actual frame size. When a short response arrives, this reads past the valid frame data in the DMA pool buffer into stale contents from previous transactions. Use the minimum of frame size and expected response size for the copy length.

Announced Source revision 1
Original source ↗

CVE-2026-53146

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-2026-53146

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": "c55da494dfb445fb28df3a9d293c2be6a299cd01",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "7720654b4842bcdfeb64bc002f6186041849e1e7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "033dfa63bf6be2653441a1dccae4a8313a91bb9d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "fc261397295b8ad0654cec747b0ec25ea0011995",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "b5daa920f44cb582272fc9bfaeb67408776cbaef",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cdae7c07e3e3509eaabc18c1640a55dc5b99c179",
        "lessThan": "4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8eb",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/thunderbolt/xdomain.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/xdomain.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-53146

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40760 · Revision 1
Added to Heist Feed
Publisher date
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