{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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-\u003es0 and devr-\u003es1.\n\nThis leads to several problems: the lock-free fast path checks\n\"if (devr-\u003es1) 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-\u003es0)-\u003emsrq.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."
    }
  ],
  "id": "CVE-2026-46176",
  "lastModified": "2026-05-28T13:44:01.663",
  "metrics": {},
  "published": "2026-05-28T10:16:33.220",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6fd93142dd1d09000c3750af08270f5792523fe9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a13c2ac4d480b734342c6fbf8249fc48afd675f3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b087913ae88256df66620f7ba0a9776716aeef7e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bc2cf5935b4665172235341163315905197ae91d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c488df06bd552bb8b6e14fa0cfd5ad986c6e9525"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-46176"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:33Z",
    "severity": null
  },
  "details": "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-\u003es0 and devr-\u003es1.\n\nThis leads to several problems: the lock-free fast path checks\n\"if (devr-\u003es1) 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-\u003es0)-\u003emsrq.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.",
  "id": "GHSA-r8g9-gm9p-ff4h",
  "modified": "2026-05-28T12:30:31Z",
  "published": "2026-05-28T12:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46176"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fd93142dd1d09000c3750af08270f5792523fe9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a13c2ac4d480b734342c6fbf8249fc48afd675f3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b087913ae88256df66620f7ba0a9776716aeef7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc2cf5935b4665172235341163315905197ae91d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c488df06bd552bb8b6e14fa0cfd5ad986c6e9525"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
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    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
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      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-46176 RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init() - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46176.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()",
    "tracking": {
      "current_release_date": "2026-05-29T01:05:19.000Z",
      "generator": {
        "date": "2026-05-29T07:23:45.800Z",
        "engine": {
          "name": "MSRC Generator",
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      },
      "id": "msrc_CVE-2026-46176",
      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-05-29T01:05:19.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
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  "product_tree": {
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              {
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                "product": {
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        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-46176",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "under_investigation": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-46176 RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init() - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46176.json"
        }
      ],
      "title": "RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()"
    }
  ]
}