CVE-2025-38730 (GCVE-0-2025-38730)
Vulnerability from cvelistv5
Published
2025-09-04 15:33
Modified
2025-09-04 15:33
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring/net: commit partial buffers on retry Ring provided buffers are potentially only valid within the single execution context in which they were acquired. io_uring deals with this and invalidates them on retry. But on the networking side, if MSG_WAITALL is set, or if the socket is of the streaming type and too little was processed, then it will hang on to the buffer rather than recycle or commit it. This is problematic for two reasons: 1) If someone unregisters the provided buffer ring before a later retry, then the req->buf_list will no longer be valid. 2) If multiple sockers are using the same buffer group, then multiple receives can consume the same memory. This can cause data corruption in the application, as either receive could land in the same userspace buffer. Fix this by disallowing partial retries from pinning a provided buffer across multiple executions, if ring provided buffers are used.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/21a4ddb0f5e933f372808c10b9ac704505751bb1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2eb7937b5fc7fcd90eab7bebb0181214b61b9283
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b53dc1c641f2884d4750fc25aaf6c36b90db606
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/41b70df5b38bc80967d2e0ed55cc3c3896bba781
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe9da1812f8697a38f7e30991d568ec199e16059
Impacted products
Vendor Product Version
Linux Linux Version: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1
Version: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1
Version: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1
Version: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1
Version: c56e022c0a27142b7b59ae6bdf45f86bf4b298a1
 Create a notification for this product.
   Linux Linux Version: 6.4
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3b53dc1c641f2884d4750fc25aaf6c36b90db606",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            },
            {
              "lessThan": "fe9da1812f8697a38f7e30991d568ec199e16059",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            },
            {
              "lessThan": "21a4ddb0f5e933f372808c10b9ac704505751bb1",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            },
            {
              "lessThan": "2eb7937b5fc7fcd90eab7bebb0181214b61b9283",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            },
            {
              "lessThan": "41b70df5b38bc80967d2e0ed55cc3c3896bba781",
              "status": "affected",
              "version": "c56e022c0a27142b7b59ae6bdf45f86bf4b298a1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.103",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.44",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.11",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.2",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17-rc2",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/net: commit partial buffers on retry\n\nRing provided buffers are potentially only valid within the single\nexecution context in which they were acquired. io_uring deals with this\nand invalidates them on retry. But on the networking side, if\nMSG_WAITALL is set, or if the socket is of the streaming type and too\nlittle was processed, then it will hang on to the buffer rather than\nrecycle or commit it. This is problematic for two reasons:\n\n1) If someone unregisters the provided buffer ring before a later retry,\n   then the req-\u003ebuf_list will no longer be valid.\n\n2) If multiple sockers are using the same buffer group, then multiple\n   receives can consume the same memory. This can cause data corruption\n   in the application, as either receive could land in the same\n   userspace buffer.\n\nFix this by disallowing partial retries from pinning a provided buffer\nacross multiple executions, if ring provided buffers are used."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-04T15:33:27.691Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3b53dc1c641f2884d4750fc25aaf6c36b90db606"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe9da1812f8697a38f7e30991d568ec199e16059"
        },
        {
          "url": "https://git.kernel.org/stable/c/21a4ddb0f5e933f372808c10b9ac704505751bb1"
        },
        {
          "url": "https://git.kernel.org/stable/c/2eb7937b5fc7fcd90eab7bebb0181214b61b9283"
        },
        {
          "url": "https://git.kernel.org/stable/c/41b70df5b38bc80967d2e0ed55cc3c3896bba781"
        }
      ],
      "title": "io_uring/net: commit partial buffers on retry",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38730",
    "datePublished": "2025-09-04T15:33:27.691Z",
    "dateReserved": "2025-04-16T04:51:24.033Z",
    "dateUpdated": "2025-09-04T15:33:27.691Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38730\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-04T16:15:43.167\",\"lastModified\":\"2025-09-05T17:47:24.833\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nio_uring/net: commit partial buffers on retry\\n\\nRing provided buffers are potentially only valid within the single\\nexecution context in which they were acquired. io_uring deals with this\\nand invalidates them on retry. But on the networking side, if\\nMSG_WAITALL is set, or if the socket is of the streaming type and too\\nlittle was processed, then it will hang on to the buffer rather than\\nrecycle or commit it. This is problematic for two reasons:\\n\\n1) If someone unregisters the provided buffer ring before a later retry,\\n   then the req-\u003ebuf_list will no longer be valid.\\n\\n2) If multiple sockers are using the same buffer group, then multiple\\n   receives can consume the same memory. This can cause data corruption\\n   in the application, as either receive could land in the same\\n   userspace buffer.\\n\\nFix this by disallowing partial retries from pinning a provided buffer\\nacross multiple executions, if ring provided buffers are used.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/21a4ddb0f5e933f372808c10b9ac704505751bb1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2eb7937b5fc7fcd90eab7bebb0181214b61b9283\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3b53dc1c641f2884d4750fc25aaf6c36b90db606\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/41b70df5b38bc80967d2e0ed55cc3c3896bba781\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fe9da1812f8697a38f7e30991d568ec199e16059\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.
  • 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.