CVE-2026-53146 (GCVE-0-2026-53146)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-08-05 12:33
VLAI
Title
thunderbolt: Limit XDomain response copy to actual frame size
Summary
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.
Severity
7.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < c55da494dfb445fb28df3a9d293c2be6a299cd01 (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < 7720654b4842bcdfeb64bc002f6186041849e1e7 (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < 033dfa63bf6be2653441a1dccae4a8313a91bb9d (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < fc261397295b8ad0654cec747b0ec25ea0011995 (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < b5daa920f44cb582272fc9bfaeb67408776cbaef (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4 (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < 4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8eb (git)
Create a notification for this product.
Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 5.10.259 , ≤ 5.10.* (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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{
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          "programFiles": [
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            }
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      "source": "Microsoft CSAF VEX",
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      "title": "thunderbolt: Limit XDomain response copy to actual frame size",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53146.json",
      "version": "2"
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When a short\\nresponse arrives, this reads past the valid frame data in the DMA\\npool buffer into stale contents from previous transactions.\\n\\nUse the minimum of frame size and expected response size for the\\ncopy 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-05T14:36:04+00:00",
      "cve": "CVE-2026-53146",
      "id": "CVE-2026-53146",
      "initial_release_date": "2026-06-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: thunderbolt: Limit XDomain response copy to actual frame size",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53146.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-21T23:50:48Z",
      "cve": "CVE-2026-53146",
      "id": "CVE-2026-53146",
      "initial_release_date": "2026-06-26T02:12:12Z",
      "product_status:known_affected": "203",
      "product_status:known_not_affected": "35",
      "product_status:recommended": "98",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53146",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53146.json",
      "version": "5"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.