Vulnerability-Lookup

GHSA-QRXQ-FH5P-2V4X

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-11-05 15:31

Details

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

io_uring: fix multishot accept request leaks

Having REQ_F_POLLED set doesn't guarantee that the request is executed as a multishot from the polling path. Fortunately for us, if the code thinks it's multishot issue when it's not, it can only ask to skip completion so leaking the request. Use issue_flags to mark multipoll issues.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49791"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:02Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fix multishot accept request leaks\n\nHaving REQ_F_POLLED set doesn\u0027t guarantee that the request is\nexecuted as a multishot from the polling path. Fortunately for us, if\nthe code thinks it\u0027s multishot issue when it\u0027s not, it can only ask to\nskip completion so leaking the request. Use issue_flags to mark\nmultipoll issues.",
  "id": "GHSA-qrxq-fh5p-2v4x",
  "modified": "2025-11-05T15:31:01Z",
  "published": "2025-05-01T15:31:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49791"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e4626de856ef8f25ecd9c716e76d4f95ce95639"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91482864768a874c4290ef93b84a78f4f1dac51b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49791 (GCVE-0-2022-49791)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-05-11 19:06

Title

io_uring: fix multishot accept request leaks

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix multishot accept request leaks Having REQ_F_POLLED set doesn't guarantee that the request is executed as a multishot from the polling path. Fortunately for us, if the code thinks it's multishot issue when it's not, it can only ask to skip completion so leaking the request. Use issue_flags to mark multipoll issues.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6820 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/0e4626de856ef8f25…
https://git.kernel.org/stable/c/91482864768a874c4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 390ed29b5e425ba00da2b6113b74a14949f71b02 , < 0e4626de856ef8f25ecd9c716e76d4f95ce95639 (git) Affected: 390ed29b5e425ba00da2b6113b74a14949f71b02 , < 91482864768a874c4290ef93b84a78f4f1dac51b (git)
Linux	Linux	Affected: 5.19 Unaffected: 0 , < 5.19 (semver) Unaffected: 6.0.10 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/linux/io_uring.h",
            "io_uring/io_uring.c",
            "io_uring/io_uring.h",
            "io_uring/net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0e4626de856ef8f25ecd9c716e76d4f95ce95639",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "91482864768a874c4290ef93b84a78f4f1dac51b",
              "status": "affected",
              "version": "390ed29b5e425ba00da2b6113b74a14949f71b02",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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            "io_uring/io_uring.c",
            "io_uring/io_uring.h",
            "io_uring/net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.10",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fix multishot accept request leaks\n\nHaving REQ_F_POLLED set doesn\u0027t guarantee that the request is\nexecuted as a multishot from the polling path. Fortunately for us, if\nthe code thinks it\u0027s multishot issue when it\u0027s not, it can only ask to\nskip completion so leaking the request. Use issue_flags to mark\nmultipoll issues."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:06:51.377Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0e4626de856ef8f25ecd9c716e76d4f95ce95639"
        },
        {
          "url": "https://git.kernel.org/stable/c/91482864768a874c4290ef93b84a78f4f1dac51b"
        }
      ],
      "title": "io_uring: fix multishot accept request leaks",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49791",
    "datePublished": "2025-05-01T14:09:23.010Z",
    "dateReserved": "2025-05-01T14:05:17.224Z",
    "dateUpdated": "2026-05-11T19:06:51.377Z",
    "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.

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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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