CVE-2022-50736 (GCVE-0-2022-50736)
Vulnerability from cvelistv5
Published
2025-12-24 12:22
Modified
2025-12-24 12:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix immediate work request flush to completion queue Correctly set send queue element opcode during immediate work request flushing in post sendqueue operation, if the QP is in ERROR state. An undefined ocode value results in out-of-bounds access to an array for mapping the opcode between siw internal and RDMA core representation in work completion generation. It resulted in a KASAN BUG report of type 'global-out-of-bounds' during NFSoRDMA testing. This patch further fixes a potential case of a malicious user which may write undefined values for completion queue elements status or opcode, if the CQ is memory mapped to user land. It avoids the same out-of-bounds access to arrays for status and opcode mapping as described above.
References
Impacted products
Vendor Product Version
Linux Linux Version: 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b
Version: 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b
Version: 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b
Version: 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b
Version: 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b
Version: 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b
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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/sw/siw/siw_cq.c",
            "drivers/infiniband/sw/siw/siw_verbs.c"
          ],
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          "vendor": "Linux",
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              "version": "5.10.163",
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            {
              "lessThanOrEqual": "6.0.*",
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              "version": "6.0.16",
              "versionType": "semver"
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              "version": "6.1.2",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix immediate work request flush to completion queue\n\nCorrectly set send queue element opcode during immediate work request\nflushing in post sendqueue operation, if the QP is in ERROR state.\nAn undefined ocode value results in out-of-bounds access to an array\nfor mapping the opcode between siw internal and RDMA core representation\nin work completion generation. It resulted in a KASAN BUG report\nof type \u0027global-out-of-bounds\u0027 during NFSoRDMA testing.\n\nThis patch further fixes a potential case of a malicious user which may\nwrite undefined values for completion queue elements status or opcode,\nif the CQ is memory mapped to user land. It avoids the same out-of-bounds\naccess to arrays for status and opcode mapping as described above."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T12:22:54.695Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6af043089d3f1210776d19b6fdabea610d4c7699"
        },
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          "url": "https://git.kernel.org/stable/c/75af03fdf35acf15a3977f7115f6b8d10dff4bc7"
        },
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        },
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          "url": "https://git.kernel.org/stable/c/355d2eca68c10d713a42f68e62044b3d1c300471"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3d26a8589dfdeff328779b511f71fb90b10005e"
        },
        {
          "url": "https://git.kernel.org/stable/c/bdf1da5df9da680589a7f74448dd0a94dd3e1446"
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      ],
      "title": "RDMA/siw: Fix immediate work request flush to completion queue",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50736",
    "datePublished": "2025-12-24T12:22:54.695Z",
    "dateReserved": "2025-12-24T12:20:40.331Z",
    "dateUpdated": "2025-12-24T12:22:54.695Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50736\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:00.290\",\"lastModified\":\"2025-12-24T13:16:00.290\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nRDMA/siw: Fix immediate work request flush to completion queue\\n\\nCorrectly set send queue element opcode during immediate work request\\nflushing in post sendqueue operation, if the QP is in ERROR state.\\nAn undefined ocode value results in out-of-bounds access to an array\\nfor mapping the opcode between siw internal and RDMA core representation\\nin work completion generation. It resulted in a KASAN BUG report\\nof type \u0027global-out-of-bounds\u0027 during NFSoRDMA testing.\\n\\nThis patch further fixes a potential case of a malicious user which may\\nwrite undefined values for completion queue elements status or opcode,\\nif the CQ is memory mapped to user land. It avoids the same out-of-bounds\\naccess to arrays for status and opcode mapping as described above.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/355d2eca68c10d713a42f68e62044b3d1c300471\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6af043089d3f1210776d19b6fdabea610d4c7699\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/75af03fdf35acf15a3977f7115f6b8d10dff4bc7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bdf1da5df9da680589a7f74448dd0a94dd3e1446\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f3d26a8589dfdeff328779b511f71fb90b10005e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f8d8fbd3b6d6cc3f25790cca5cffe8ded512fef6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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