net: rds: fix MR cleanup on copy error_CVE-2026-46053

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-05-27T12:57:11.870Z",
    "modified": "2026-05-30T10:47:00.607Z",
    "type": "cve",
    "title": "net: rds: fix MR cleanup on copy error",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdc\nhttps://git.kernel.org/stable/c/d95cea9298be1ba8876e3f156be96d3a492085ca\nhttps://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589a\nhttps://git.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765c\nhttps://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bd",
    "id": "CVE-2026-46053",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 0d4597c8c5abdeeaf50774066c16683f30184dc8\nLinux Linux 0d4597c8c5abdeeaf50774066c16683f30184dc8\nLinux Linux 0d4597c8c5abdeeaf50774066c16683f30184dc8\nLinux Linux 0d4597c8c5abdeeaf50774066c16683f30184dc8\nLinux Linux 0d4597c8c5abdeeaf50774066c16683f30184dc8\nLinux Linux 5.6",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "0d4597c8c5abdeeaf50774066c16683f30184dc8",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
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    "ai_score": 0
}