Vulnerability-Lookup

GHSA-P6F8-FPCW-HG3G

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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

net: rds: fix MR cleanup on copy error

__rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference.

Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46053"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:24Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: rds: fix MR cleanup on copy error\n\n__rds_rdma_map() hands sg/pages ownership to the transport after\nget_mr() succeeds. If copying the generated cookie back to user space\nfails after that point, the error path must not free those resources\nagain before dropping the MR reference.\n\nRemove the duplicate unpin/free from the put_user() failure branch so\nthat MR teardown is handled only through the existing final cleanup\npath.",
  "id": "GHSA-p6f8-fpcw-hg3g",
  "modified": "2026-05-27T15:33:22Z",
  "published": "2026-05-27T15:33:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46053"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d95cea9298be1ba8876e3f156be96d3a492085ca"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46053 (GCVE-0-2026-46053)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-05-27 12:57

Title

net: rds: fix MR cleanup on copy error

Summary

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference. Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/8fdbb6262a4a3ed44…
https://git.kernel.org/stable/c/d95cea9298be1ba88…
https://git.kernel.org/stable/c/033370ffb3c9c0264…
https://git.kernel.org/stable/c/b3cb8cae530b2727d…
https://git.kernel.org/stable/c/8141a2dc70080eda1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0d4597c8c5abdeeaf50774066c16683f30184dc8 , < 8fdbb6262a4a3ed44a0830a7793903b54bb27bdc (git) Affected: 0d4597c8c5abdeeaf50774066c16683f30184dc8 , < d95cea9298be1ba8876e3f156be96d3a492085ca (git) Affected: 0d4597c8c5abdeeaf50774066c16683f30184dc8 , < 033370ffb3c9c0264d19f8ba9ef769523266589a (git) Affected: 0d4597c8c5abdeeaf50774066c16683f30184dc8 , < b3cb8cae530b2727d8245684148bb49425f6765c (git) Affected: 0d4597c8c5abdeeaf50774066c16683f30184dc8 , < 8141a2dc70080eda1aedc0389ed2db2b292af5bd (git)
Linux	Linux	Affected: 5.6 Unaffected: 0 , < 5.6 (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/rds/rdma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8fdbb6262a4a3ed44a0830a7793903b54bb27bdc",
              "status": "affected",
              "version": "0d4597c8c5abdeeaf50774066c16683f30184dc8",
              "versionType": "git"
            },
            {
              "lessThan": "d95cea9298be1ba8876e3f156be96d3a492085ca",
              "status": "affected",
              "version": "0d4597c8c5abdeeaf50774066c16683f30184dc8",
              "versionType": "git"
            },
            {
              "lessThan": "033370ffb3c9c0264d19f8ba9ef769523266589a",
              "status": "affected",
              "version": "0d4597c8c5abdeeaf50774066c16683f30184dc8",
              "versionType": "git"
            },
            {
              "lessThan": "b3cb8cae530b2727d8245684148bb49425f6765c",
              "status": "affected",
              "version": "0d4597c8c5abdeeaf50774066c16683f30184dc8",
              "versionType": "git"
            },
            {
              "lessThan": "8141a2dc70080eda1aedc0389ed2db2b292af5bd",
              "status": "affected",
              "version": "0d4597c8c5abdeeaf50774066c16683f30184dc8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/rds/rdma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.86",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
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                }
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              "operator": "OR"
            }
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        }
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: rds: fix MR cleanup on copy error\n\n__rds_rdma_map() hands sg/pages ownership to the transport after\nget_mr() succeeds. If copying the generated cookie back to user space\nfails after that point, the error path must not free those resources\nagain before dropping the MR reference.\n\nRemove the duplicate unpin/free from the put_user() failure branch so\nthat MR teardown is handled only through the existing final cleanup\npath."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:57:11.870Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdc"
        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589a"
        },
        {
          "url": "https://git.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765c"
        },
        {
          "url": "https://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bd"
        }
      ],
      "title": "net: rds: fix MR cleanup on copy error",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46053",
    "datePublished": "2026-05-27T12:57:11.870Z",
    "dateReserved": "2026-05-13T15:03:33.094Z",
    "dateUpdated": "2026-05-27T12:57:11.870Z",
    "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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-P6F8-FPCW-HG3G

CVE-2026-46053 (GCVE-0-2026-46053)

Tags

Sightings

Nomenclature