Vulnerability-Lookup

EUVD-2026-346397

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 08:09

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T08:09:02.312353+00:00",
  "id": "EUVD-2026-346397"
}

CVE-2024-53103 (GCVE-0-2024-53103)

Vulnerability from cvelistv5 – Published: 2024-12-02 07:29 – Updated: 2026-08-05 11:43

Title

hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer

Summary

In the Linux kernel, the following vulnerability has been resolved: hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer When hvs is released, there is a possibility that vsk->trans may not be initialized to NULL, which could lead to a dangling pointer. This issue is resolved by initializing vsk->trans to NULL.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 20:11 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux mitre root Scorecard

References

11 references

URL	Tags
https://git.kernel.org/stable/c/285266ef92f7b4bf7…
https://git.kernel.org/stable/c/4fe1d42f2acc463b7…
https://git.kernel.org/stable/c/414476c4fb11be070…
https://git.kernel.org/stable/c/7cf25987820350cb9…
https://git.kernel.org/stable/c/98d8dde9232250a57…
https://git.kernel.org/stable/c/4bdc5a62c6e50600d…
https://git.kernel.org/stable/c/e0fe3392371293175…
https://git.kernel.org/stable/c/8621725afb38e1119…
https://git.kernel.org/stable/c/e629295bd60abf4da…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < 285266ef92f7b4bf7d26e1e95e215ce6a6badb4a (git) Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < 4fe1d42f2acc463b733bb42e3f8e67dbc2a0eb2d (git) Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < 414476c4fb11be070c09ab8f3e75c9ee324a108a (git) Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < 7cf25987820350cb950856c71b409e5b6eed52bd (git) Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < 98d8dde9232250a57ad5ef16479bf6a349e09b80 (git) Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < 4bdc5a62c6e50600d8a1c3e18fd6dce0c27c9497 (git) Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < e0fe3392371293175f25028020ded5267f4cd8e3 (git) Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < 8621725afb38e111969c64280b71480afde2aace (git) Affected: ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9 , < e629295bd60abf4da1db85b82819ca6a4f6c1e79 (git)
Linux	Linux	Affected: 4.14 Unaffected: 0 , < 4.14 (semver) Unaffected: 4.19.324 , ≤ 4.19.* (semver) Unaffected: 5.4.286 , ≤ 5.4.* (semver) Unaffected: 5.10.230 , ≤ 5.10.* (semver) Unaffected: 5.15.172 , ≤ 5.15.* (semver) Unaffected: 6.1.117 , ≤ 6.1.* (semver) Unaffected: 6.6.61 , ≤ 6.6.* (semver) Unaffected: 6.11.8 , ≤ 6.11.* (semver) Unaffected: 6.12.1 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "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",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-53103",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:11:01.150228Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:17:12.174Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:29:15.536Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/vmw_vsock/hyperv_transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "285266ef92f7b4bf7d26e1e95e215ce6a6badb4a",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            },
            {
              "lessThan": "4fe1d42f2acc463b733bb42e3f8e67dbc2a0eb2d",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            },
            {
              "lessThan": "414476c4fb11be070c09ab8f3e75c9ee324a108a",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            },
            {
              "lessThan": "7cf25987820350cb950856c71b409e5b6eed52bd",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            },
            {
              "lessThan": "98d8dde9232250a57ad5ef16479bf6a349e09b80",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            },
            {
              "lessThan": "4bdc5a62c6e50600d8a1c3e18fd6dce0c27c9497",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            },
            {
              "lessThan": "e0fe3392371293175f25028020ded5267f4cd8e3",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            },
            {
              "lessThan": "8621725afb38e111969c64280b71480afde2aace",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            },
            {
              "lessThan": "e629295bd60abf4da1db85b82819ca6a4f6c1e79",
              "status": "affected",
              "version": "ae0078fcf0a5eb3a8623bfb5f988262e0911fdb9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/vmw_vsock/hyperv_transport.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.14"
            },
            {
              "lessThan": "4.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.324",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.286",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.230",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.172",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.117",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.61",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.324",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.286",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.230",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.172",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.117",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.61",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.8",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.1",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "4.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhv_sock: Initializing vsk-\u003etrans to NULL to prevent a dangling pointer\n\nWhen hvs is released, there is a possibility that vsk-\u003etrans may not\nbe initialized to NULL, which could lead to a dangling pointer.\nThis issue is resolved by initializing vsk-\u003etrans to NULL."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is reached through the AF_VSOCK socket API (`socket()`/`connect()`) from a local process in the guest; there is no path that lets a remote or adjacent peer drive the transport reassignment. Per kernel scoring convention vsock bugs are Local.\nAC:L - The attacker fully controls the trigger sequence \u2014 `connect()` to VMADDR_CID_HOST to get the hv_sock transport, self-delivered signal (alarm/timer) to force the `SS_UNCONNECTED`/`TCP_CLOSING` state at af_vsock.c:1524, then `connect()` to VMADDR_CID_LOCAL to force `hvs_destruct()` \u2014 and can retry the sequence indefinitely with cheap, attacker-controlled heap grooming.\nPR:L - `vsock_create()` performs no capability check, so any unprivileged local user can create AF_VSOCK sockets and drive `vsock_connect()`; the required hv_sock and vsock_loopback modules are autoloaded by that unprivileged `socket()` call via MODULE_ALIAS_NETPROTO(PF_VSOCK).\nUI:N - The entire sequence is performed by the attacker\u0027s own process through ordinary syscalls; no action by any other user or administrator is needed.\nS:U - The dangling `struct hvsock` and the corrupted kernel heap are within the guest kernel\u0027s own security authority; hv_sock is the guest-side transport, so there is no crossing into the Hyper-V host or another VM.\nC:H - A dangling `vsk-\u003etrans` gives a use-after-free on a kmalloc\u0027d `struct hvsock`; reclaiming that slot with attacker-chosen data and having `hvs_stream_dequeue()`/`hvs_update_recv_data()` read through the stale `recv_desc`/`recv_data_off`/`recv_data_len` fields yields controlled kernel memory disclosure into userspace.\nI:H - The same UAF is a write primitive \u2014 `hvs_open_connection()` does `hvs-\u003echan = chan` and `hvs_update_recv_data()` writes `recv_data_len`/`recv_data_off` into the freed object, so heap spraying over the reclaimed slot allows corruption of an adjacent/overlapping kernel object and control-flow hijacking.\nA:H - Even without successful exploitation the stale pointer causes dereference of freed memory (or a NULL `vsk-\u003etransport` deref from `hvs_close_timeout` \u2192 `vsock_stream_has_data()`), producing a kernel oops/panic that an unprivileged user can trigger repeatedly."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:43:43.359Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/285266ef92f7b4bf7d26e1e95e215ce6a6badb4a"
        },
        {
          "url": "https://git.kernel.org/stable/c/4fe1d42f2acc463b733bb42e3f8e67dbc2a0eb2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/414476c4fb11be070c09ab8f3e75c9ee324a108a"
        },
        {
          "url": "https://git.kernel.org/stable/c/7cf25987820350cb950856c71b409e5b6eed52bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/98d8dde9232250a57ad5ef16479bf6a349e09b80"
        },
        {
          "url": "https://git.kernel.org/stable/c/4bdc5a62c6e50600d8a1c3e18fd6dce0c27c9497"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0fe3392371293175f25028020ded5267f4cd8e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/8621725afb38e111969c64280b71480afde2aace"
        },
        {
          "url": "https://git.kernel.org/stable/c/e629295bd60abf4da1db85b82819ca6a4f6c1e79"
        }
      ],
      "title": "hv_sock: Initializing vsk-\u003etrans to NULL to prevent a dangling pointer",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53103",
    "datePublished": "2024-12-02T07:29:26.450Z",
    "dateReserved": "2024-11-19T17:17:24.984Z",
    "dateUpdated": "2026-08-05T11:43:43.359Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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EUVD-2026-346397

CVE-2024-53103 (GCVE-0-2024-53103)

Tags

Sightings

Nomenclature

Related by attack behaviour