Vulnerability-Lookup

GHSA-Q3HJ-QW3J-GV7P

Vulnerability from github – Published: 2026-03-18 18:31 – Updated: 2026-05-29 21:31

Details

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

io_uring/rw: free potentially allocated iovec on cache put failure

If a read/write request goes through io_req_rw_cleanup() and has an allocated iovec attached and fails to put to the rw_cache, then it may end up with an unaccounted iovec pointer. Have io_rw_recycle() return whether it recycled the request or not, and use that to gauge whether to free a potential iovec or not.

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-2026-23259"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-18T18:16:24Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rw: free potentially allocated iovec on cache put failure\n\nIf a read/write request goes through io_req_rw_cleanup() and has an\nallocated iovec attached and fails to put to the rw_cache, then it may\nend up with an unaccounted iovec pointer. Have io_rw_recycle() return\nwhether it recycled the request or not, and use that to gauge whether to\nfree a potential iovec or not.",
  "id": "GHSA-q3hj-qw3j-gv7p",
  "modified": "2026-05-29T21:31:16Z",
  "published": "2026-03-18T18:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23259"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b9748055457ac3a0710bf210c229d01ea1b01b9"
    }
  ],
  "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-2026-23259 (GCVE-0-2026-23259)

Vulnerability from cvelistv5 – Published: 2026-03-18 17:41 – Updated: 2026-05-11 22:03

Title

io_uring/rw: free potentially allocated iovec on cache put failure

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/rw: free potentially allocated iovec on cache put failure If a read/write request goes through io_req_rw_cleanup() and has an allocated iovec attached and fails to put to the rw_cache, then it may end up with an unaccounted iovec pointer. Have io_rw_recycle() return whether it recycled the request or not, and use that to gauge whether to free a potential iovec or not.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/1d5f2329ab4df65c2…
https://git.kernel.org/stable/c/4b9748055457ac3a0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a9165b83c1937eeed1f0c731468216d6371d647f , < 1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c (git) Affected: a9165b83c1937eeed1f0c731468216d6371d647f , < 4b9748055457ac3a0710bf210c229d01ea1b01b9 (git)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 6.18.10 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/rw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c",
              "status": "affected",
              "version": "a9165b83c1937eeed1f0c731468216d6371d647f",
              "versionType": "git"
            },
            {
              "lessThan": "4b9748055457ac3a0710bf210c229d01ea1b01b9",
              "status": "affected",
              "version": "a9165b83c1937eeed1f0c731468216d6371d647f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/rw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.10",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "6.10",
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                }
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rw: free potentially allocated iovec on cache put failure\n\nIf a read/write request goes through io_req_rw_cleanup() and has an\nallocated iovec attached and fails to put to the rw_cache, then it may\nend up with an unaccounted iovec pointer. Have io_rw_recycle() return\nwhether it recycled the request or not, and use that to gauge whether to\nfree a potential iovec or not."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:03:23.984Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b9748055457ac3a0710bf210c229d01ea1b01b9"
        }
      ],
      "title": "io_uring/rw: free potentially allocated iovec on cache put failure",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23259",
    "datePublished": "2026-03-18T17:41:05.827Z",
    "dateReserved": "2026-01-13T15:37:45.990Z",
    "dateUpdated": "2026-05-11T22:03:23.984Z",
    "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.
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GHSA-Q3HJ-QW3J-GV7P

CVE-2026-23259 (GCVE-0-2026-23259)

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