{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-74346",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-74346"
  ],
  "published": "2026-08-15T06:04:33Z",
  "summary": "RDMA/irdma: Fix OOB read during CQ MR registration",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix OOB read during CQ MR registration\n\nSashiko pointed out an unrelated bug during a previous patch:\nhttps://sashiko.dev/#/patchset/20260512183852.614045-1-jmoroni%40google.com\n\nThis change fixes the bug by eliminating the cqmr->split field which\nwas not being set properly and instead just checks the CQ resize\nfeature flag directly.\n\nThe cqmr->split field essentially tracks whether IRDMA_FEATURE_CQ_RESIZE\nis set, but it was not being set until CQ creation time, which is _after_\nCQ memory registration (the only other place where it is referenced).\n\nAs a result, it would always be false during MR registration and would\ntherefore cause irdma_handle_q_mem to populate cqmr->shadow even for GEN_2\nHW and beyond:\n\n    cqmr->shadow = (dma_addr_t)arr[req->cq_pages];\n\nThe issue is that for GEN_2 and beyond, req->cq_pages may be exactly equal\nto iwmr->page_cnt and therefore equal to the size of arr, which would cause\nan OOB read by one.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-74346"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a80b3b13786e9ab1c52b31a1f16c7d6708fa9220"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3159c6fac43dc24b34d31971884d98a7a1bf4c4b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ad360a31092a870633ec255b96f50181628b4de0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d566002de555b18cc395012c5c1cb8682fc6d2a9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/54cab78df0375196aaec4e3109191653d21751df"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d5aa82da8f65562da996d184686db9d0ea718b91"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4385ddd654d90245eeb83b3cb539670ab5c85ba4"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}