github - ghsa-f89g-f269-w35c

ghsa-f89g-f269-w35c

Vulnerability from github

Published

2025-10-28 12:30

Modified

2025-10-28 12:30

Details

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

io_uring/zcrx: fix overshooting recv limit

It's reported that sometimes a zcrx request can receive more than was requested. It's caused by io_zcrx_recv_skb() adjusting desc->count for all received buffers including frag lists, but then doing recursive calls to process frag list skbs, which leads to desc->count double accounting and underflow.

Show details on source website

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-40046"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-28T12:15:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zcrx: fix overshooting recv limit\n\nIt\u0027s reported that sometimes a zcrx request can receive more than was\nrequested. It\u0027s caused by io_zcrx_recv_skb() adjusting desc-\u003ecount for\nall received buffers including frag lists, but then doing recursive\ncalls to process frag list skbs, which leads to desc-\u003ecount double\naccounting and underflow.",
  "id": "GHSA-f89g-f269-w35c",
  "modified": "2025-10-28T12:30:16Z",
  "published": "2025-10-28T12:30:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40046"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09cfd3c52ea76f43b3cb15e570aeddf633d65e80"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bcc9eaf1b19f1a7029cba19f6bd4122b40f6c4f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40046 (GCVE-0-2025-40046)

Vulnerability from cvelistv5

Published

2025-10-28 11:48

Modified

2025-10-28 11:48

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix overshooting recv limit It's reported that sometimes a zcrx request can receive more than was requested. It's caused by io_zcrx_recv_skb() adjusting desc->count for all received buffers including frag lists, but then doing recursive calls to process frag list skbs, which leads to desc->count double accounting and underflow.

References

URL

Tags

	https://git.kernel.org/stable/c/8bcc9eaf1b19f1a7029cba19f6bd4122b40f6c4f
	https://git.kernel.org/stable/c/09cfd3c52ea76f43b3cb15e570aeddf633d65e80

Impacted products

Vendor

Product

Version

Version: 6699ec9a23f85f1764183430209c741847c45f12
Version: 6699ec9a23f85f1764183430209c741847c45f12

Version: 6.15

Show details on NVD website

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/zcrx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8bcc9eaf1b19f1a7029cba19f6bd4122b40f6c4f",
              "status": "affected",
              "version": "6699ec9a23f85f1764183430209c741847c45f12",
              "versionType": "git"
            },
            {
              "lessThan": "09cfd3c52ea76f43b3cb15e570aeddf633d65e80",
              "status": "affected",
              "version": "6699ec9a23f85f1764183430209c741847c45f12",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/zcrx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.3",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18-rc1",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zcrx: fix overshooting recv limit\n\nIt\u0027s reported that sometimes a zcrx request can receive more than was\nrequested. It\u0027s caused by io_zcrx_recv_skb() adjusting desc-\u003ecount for\nall received buffers including frag lists, but then doing recursive\ncalls to process frag list skbs, which leads to desc-\u003ecount double\naccounting and underflow."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-28T11:48:24.022Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8bcc9eaf1b19f1a7029cba19f6bd4122b40f6c4f"
        },
        {
          "url": "https://git.kernel.org/stable/c/09cfd3c52ea76f43b3cb15e570aeddf633d65e80"
        }
      ],
      "title": "io_uring/zcrx: fix overshooting recv limit",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40046",
    "datePublished": "2025-10-28T11:48:24.022Z",
    "dateReserved": "2025-04-16T07:20:57.154Z",
    "dateUpdated": "2025-10-28T11:48:24.022Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Log in or create an account to share your comment.

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.