RDMA: During rereg_mr ensure that REREG_ACCESS is compatible_CVE-2026-52908

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA: During rereg_mr ensure that REREG_ACCESS is compatible\n\nIf IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be\nre-evaluated to ensure it is properly pinned as RW. Since the umem is\nhidden inside each driver's mr struct add a ib_umem_check_rereg() function\nthat each driver has to call before processing IB_MR_REREG_ACCESS.\n\nmlx4 has to retain its duplicate ib_access_writable check because it\nimplements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items\nin place sequentially while the MR is live, so it will continue to not\nsupport this combination.",
    "published": "2026-06-19T14:00:35.971Z",
    "modified": "2026-06-28T06:36:24.208Z",
    "type": "cve",
    "title": "RDMA: During rereg_mr ensure that REREG_ACCESS is compatible",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/09dc18894148381d3bfc550083b1236043870dce\nhttps://git.kernel.org/stable/c/eba5df21eda0fe7418efbea2f799f8ea1b8ca94c\nhttps://git.kernel.org/stable/c/2904e985a2917b5dac65df82733065e78a65fc9d\nhttps://git.kernel.org/stable/c/50334a05a950840b39a1ce3d2a173b4183db9b3e\nhttps://git.kernel.org/stable/c/badad6fad60def1b9805559dd81dbab3d97b82aa",
    "id": "CVE-2026-52908",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux b40656aa7d559adc1fe689396dc58b92a9a27286\nLinux Linux b40656aa7d559adc1fe689396dc58b92a9a27286\nLinux Linux b40656aa7d559adc1fe689396dc58b92a9a27286\nLinux Linux b40656aa7d559adc1fe689396dc58b92a9a27286\nLinux Linux b40656aa7d559adc1fe689396dc58b92a9a27286\nLinux Linux 6.2",
    "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": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "b40656aa7d559adc1fe689396dc58b92a9a27286",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
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    "ai_score": 0
}