Vulnerability-Lookup

GHSA-XRVP-77WR-X978

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-08 21:31

Details

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

io_uring/zcrx: fix sgtable leak on mapping failures

In an unlikely case when io_populate_area_dma() fails, which could only happen on a PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA machine, io_zcrx_map_area() will have an initialised and not freed table. It was supposed to be cleaned up in the error path, but !is_mapped prevents that.

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-2026-43224"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:42Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zcrx: fix sgtable leak on mapping failures\n\nIn an unlikely case when io_populate_area_dma() fails, which could only\nhappen on a PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA machine,\nio_zcrx_map_area() will have an initialised and not freed table. It was\nsupposed to be cleaned up in the error path, but !is_mapped prevents\nthat.",
  "id": "GHSA-xrvp-77wr-x978",
  "modified": "2026-05-08T21:31:20Z",
  "published": "2026-05-06T12:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43224"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a983aae397767e9da931128ff2b5bf9066513ce3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1ae403324311e143ef20e53cf9a5f01e312f7c9"
    }
  ],
  "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-2026-43224 (GCVE-0-2026-43224)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-11 22:20

Title

io_uring/zcrx: fix sgtable leak on mapping failures

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix sgtable leak on mapping failures In an unlikely case when io_populate_area_dma() fails, which could only happen on a PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA machine, io_zcrx_map_area() will have an initialised and not freed table. It was supposed to be cleaned up in the error path, but !is_mapped prevents that.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/f1ae403324311e143…
https://git.kernel.org/stable/c/ef075c1464ac9047e…
https://git.kernel.org/stable/c/a983aae397767e9da…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 439a98b972fbb1991819b5367f482cd4161ba39c , < f1ae403324311e143ef20e53cf9a5f01e312f7c9 (git) Affected: 439a98b972fbb1991819b5367f482cd4161ba39c , < ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60 (git) Affected: 439a98b972fbb1991819b5367f482cd4161ba39c , < a983aae397767e9da931128ff2b5bf9066513ce3 (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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{
  "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": [
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              "status": "affected",
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              "version": "439a98b972fbb1991819b5367f482cd4161ba39c",
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            },
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              "status": "affected",
              "version": "439a98b972fbb1991819b5367f482cd4161ba39c",
              "versionType": "git"
            }
          ]
        },
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          "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": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "version": "6.18.16",
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            },
            {
              "lessThanOrEqual": "6.19.*",
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              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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            {
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
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                },
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                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zcrx: fix sgtable leak on mapping failures\n\nIn an unlikely case when io_populate_area_dma() fails, which could only\nhappen on a PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA machine,\nio_zcrx_map_area() will have an initialised and not freed table. It was\nsupposed to be cleaned up in the error path, but !is_mapped prevents\nthat."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:20:24.269Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
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      ],
      "title": "io_uring/zcrx: fix sgtable leak on mapping failures",
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        "engine": "bippy-1.2.0"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43224",
    "datePublished": "2026-05-06T11:28:23.620Z",
    "dateReserved": "2026-05-01T14:12:55.994Z",
    "dateUpdated": "2026-05-11T22:20:24.269Z",
    "state": "PUBLISHED"
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}

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-XRVP-77WR-X978

CVE-2026-43224 (GCVE-0-2026-43224)

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