Vulnerability-Lookup

GHSA-Q84F-VW64-JF47

Vulnerability from github – Published: 2025-12-16 15:30 – Updated: 2026-07-30 06:32

Details

In the Linux kernel, the following vulnerability has been resolved:

io_uring/cmd_net: fix wrong argument types for skb_queue_splice()

If timestamp retriving needs to be retried and the local list of SKB's already has entries, then it's spliced back into the socket queue. However, the arguments for the splice helper are transposed, causing exactly the wrong direction of splicing into the on-stack list. Fix that up.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68234"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T14:15:58Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/cmd_net: fix wrong argument types for skb_queue_splice()\n\nIf timestamp retriving needs to be retried and the local list of\nSKB\u0027s already has entries, then it\u0027s spliced back into the socket\nqueue. However, the arguments for the splice helper are transposed,\ncausing exactly the wrong direction of splicing into the on-stack\nlist. Fix that up.",
  "id": "GHSA-q84f-vw64-jf47",
  "modified": "2026-07-30T06:32:24Z",
  "published": "2025-12-16T15:30:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68234"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46447367a52965e9d35f112f5b26fc8ff8ec443d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c85d2cfc5e24e6866b56c7253fd4e1c7db35986c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-68234 (GCVE-0-2025-68234)

Vulnerability from cvelistv5 – Published: 2025-12-16 14:04 – Updated: 2026-08-05 12:10

Title

io_uring/cmd_net: fix wrong argument types for skb_queue_splice()

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/cmd_net: fix wrong argument types for skb_queue_splice() If timestamp retriving needs to be retried and the local list of SKB's already has entries, then it's spliced back into the socket queue. However, the arguments for the splice helper are transposed, causing exactly the wrong direction of splicing into the on-stack list. Fix that up.

Severity

7.8 (High)


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

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6639 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/c85d2cfc5e24e6866…
https://git.kernel.org/stable/c/46447367a52965e9d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 9e4ed359b8efad0e8ad4510d8ad22bf0b060526a , < c85d2cfc5e24e6866b56c7253fd4e1c7db35986c (git) Affected: 9e4ed359b8efad0e8ad4510d8ad22bf0b060526a , < 46447367a52965e9d35f112f5b26fc8ff8ec443d (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.17.10 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/cmd_net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c85d2cfc5e24e6866b56c7253fd4e1c7db35986c",
              "status": "affected",
              "version": "9e4ed359b8efad0e8ad4510d8ad22bf0b060526a",
              "versionType": "git"
            },
            {
              "lessThan": "46447367a52965e9d35f112f5b26fc8ff8ec443d",
              "status": "affected",
              "version": "9e4ed359b8efad0e8ad4510d8ad22bf0b060526a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/cmd_net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/cmd_net: fix wrong argument types for skb_queue_splice()\n\nIf timestamp retriving needs to be retried and the local list of\nSKB\u0027s already has entries, then it\u0027s spliced back into the socket\nqueue. However, the arguments for the splice helper are transposed,\ncausing exactly the wrong direction of splicing into the on-stack\nlist. Fix that up."
        }
      ],
      "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 - Exploitation requires a local attacker to submit a socket TX-timestamp command through io_uring; incoming network traffic alone cannot invoke the vulnerable command.\nAC:L - The attacker can fill the completion queue and construct a mixed socket error queue, deterministically reaching the malformed splice without relying on an uncontrollable race.\nPR:L - Ordinary unprivileged users can create the required socket and CQE32 io_uring and enable software TX timestamping; no capability or initial-namespace privilege is required.\nUI:N - The attacker directly performs all required socket and io_uring operations without victim participation.\nS:U - The corruption occurs within the host kernel and represents conventional local privilege escalation within the same security authority.\nC:H - The corrupted queue produces a reclaimable sk_buff use-after-free that can expose reallocated kernel or cross-socket data and be developed into a high-impact read primitive.\nI:H - Subsequent unlink operations write through stale or attacker-reclaimed next and prev pointers, enabling arbitrary memory corruption and potential kernel control-flow hijacking.\nA:H - Following the corrupted queue can immediately dereference invalid stack or freed-slab pointers, causing a kernel oops or panic; the non-corrupting case also leaks socket-backed SKBs."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:10:23.703Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/46447367a52965e9d35f112f5b26fc8ff8ec443d"
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      ],
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    "cveId": "CVE-2025-68234",
    "datePublished": "2025-12-16T14:04:14.300Z",
    "dateReserved": "2025-12-16T13:41:40.258Z",
    "dateUpdated": "2026-08-05T12:10:23.703Z",
    "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.

Vulnerability timeline

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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.
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