CVE-2026-53147 (GCVE-0-2026-53147)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-28 06:39
VLAI
Title
thunderbolt: Validate XDomain request packet size before type cast
Summary
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Validate XDomain request packet size before type cast tb_xdp_handle_request() casts the received packet buffer to protocol-specific structs without verifying that the allocation is large enough for the target type. A peer can send a minimal XDomain packet that passes the generic header length check but is shorter than the struct accessed after the cast, causing out-of- bounds reads from the kmemdup allocation. Plumb the packet length through xdomain_request_work and validate it against the expected struct size before each cast.
Severity
8.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < a770e62923090d7572f1f5a8507ae551d354a057 (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < 0dd61ba03d05187726ecdf9c0e2175a81b9b24f6 (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < 79235c8add5da4bf27a12f5a5dbb579f300c059e (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < 46da5c3ea011e884028a91cf913db093920a915b (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < 07cd2787cdf8942d24a1a3ef81aa89b526fb6381 (git)
Affected: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 , < a504b9f2797b739e0304d537e8aa4ce883ecce39 (git)
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Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (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)
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    "dateReserved": "2026-06-09T07:44:35.387Z",
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  }
}


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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

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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.