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CVE-2025-38403 (GCVE-0-2025-38403)

Vulnerability from cvelistv5 – Published: 2025-07-25 13:08 – Updated: 2026-06-11 18:44
VLAI
Title
vsock/vmci: Clear the vmci transport packet properly when initializing it
Summary
In the Linux kernel, the following vulnerability has been resolved: vsock/vmci: Clear the vmci transport packet properly when initializing it In vmci_transport_packet_init memset the vmci_transport_packet before populating the fields to avoid any uninitialised data being left in the structure.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 20:40 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 19c2cc01ff9a8031398a802676ffb0f4692dd95d (git)
Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 1c1bcb0e78230f533b4103e8cf271d17c3f469f0 (git)
Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 2d44723a091bc853272e1a51a488a3d22b80be5e (git)
Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 0a01021317375b8d1895152f544421ce49299eb1 (git)
Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 94d0c326cb3ee6b0f8bd00e209550b93fcc5c839 (git)
Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 75705b44e0b9aaa74f4c163d93d388bcba9e386a (git)
Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < e9a673153d578fd439919a24e99851b2f87ecbce (git)
Affected: d021c344051af91f42c5ba9fdedc176740cbd238 , < 223e2288f4b8c262a864e2c03964ffac91744cd5 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.9
Unaffected: 0 , < 3.9 (semver)
Unaffected: 5.4.296 , ≤ 5.4.* (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.187 , ≤ 5.15.* (semver)
Unaffected: 6.1.144 , ≤ 6.1.* (semver)
Unaffected: 6.6.97 , ≤ 6.6.* (semver)
Unaffected: 6.12.37 , ≤ 6.12.* (semver)
Unaffected: 6.15.6 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          {
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "product_status:known_affected": "50",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Kernel: Privilege escalation via uninitialized data in vmci transport packet",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38403.json",
      "version": "3"
    },
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      "current_release_date": "2026-08-31T13:48:15Z",
      "cve": "CVE-2025-38403",
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/vmci: Clear the vmci transport packet properly when initializing it\n\nIn vmci_transport_packet_init memset the vmci_transport_packet before\npopulating the fields to avoid any uninitialised data being left in the\nstructure."
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          "title": "vsock/vmci: Clear the vmci transport packet properly when initializing it",
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        "dateReserved": "2025-04-16T04:51:24.012Z",
        "dateUpdated": "2026-06-11T18:44:06.825Z",
        "state": "PUBLISHED"
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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

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.