RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()_CVE-2026-46176

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()\n\nmlx5_ib_dev_res_srq_init() allocates two SRQs, s0 and s1. When\nib_create_srq() fails for s1, the error branch destroys s0 but falls\nthrough and unconditionally assigns the freed s0 and the ERR_PTR s1 to\ndevr->s0 and devr->s1.\n\nThis leads to several problems: the lock-free fast path checks\n\"if (devr->s1) return 0;\" and treats the ERR_PTR as already initialised;\nusers in mlx5_ib_create_qp() dereference the freed SRQ or ERR_PTR via\nto_msrq(devr->s0)->msrq.srqn; and mlx5_ib_dev_res_cleanup() dereferences\nthe ERR_PTR and double-frees s0 on teardown.\n\nFix by adding the same `goto unlock` in the s1 failure path.",
    "published": "2026-05-28T09:36:30.398Z",
    "modified": "2026-05-30T10:48:43.173Z",
    "type": "cve",
    "title": "RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/a13c2ac4d480b734342c6fbf8249fc48afd675f3\nhttps://git.kernel.org/stable/c/bc2cf5935b4665172235341163315905197ae91d\nhttps://git.kernel.org/stable/c/b087913ae88256df66620f7ba0a9776716aeef7e\nhttps://git.kernel.org/stable/c/6fd93142dd1d09000c3750af08270f5792523fe9\nhttps://git.kernel.org/stable/c/c488df06bd552bb8b6e14fa0cfd5ad986c6e9525",
    "id": "CVE-2026-46176",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux b6334d2356fc0922ed01457960f74923058a353a\nLinux Linux 5895e70f2e6e8dc67b551ca554d6fcde0a7f0467\nLinux Linux 5895e70f2e6e8dc67b551ca554d6fcde0a7f0467\nLinux Linux 5895e70f2e6e8dc67b551ca554d6fcde0a7f0467\nLinux Linux 5895e70f2e6e8dc67b551ca554d6fcde0a7f0467\nLinux Linux 6.6.64\nLinux Linux 6.11",
    "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": "",
            "attackVector": "",
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            "privilegesRequired": "",
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            "confidentialityImpact": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "b6334d2356fc0922ed01457960f74923058a353a",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}