{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b48c24c2d710cf34810c555dcef883a3d35a9c08"
            },
            {
              "fixed": "ec675b4cdfd378d8c9dd8c93126c024f2469bd79"
            },
            {
              "fixed": "728211c815f6eef28dd3df2a5b6297483185aa20"
            },
            {
              "fixed": "b9b0889071569d43623c260074e159cd8f26adb1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.14.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68418.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Prevent user-triggered null deref on QP create\n\nPreviously, the user QP creation path would only attempt to\npopulate iwqp-\u003eiwpbl if the user-provided req.user_wqe_bufs\nfield was non-zero. The problem is that iwqp-\u003eiwpbl is\nunconditionally dereferenced later on in irdma_setup_virt_qp.\n\nWhile there was a check for iwqp-\u003eiwpbl != NULL, this check\nwould only occur if req.user_wqe_bufs was non-zero. The end\nresult is that a user could send a zero user_wqe_bufs value\nand trigger a null ptr deref.\n\nFix this by unconditionally calling irdma_get_pbl and bailing\nif it fails, similar to the CQ and SRQ paths.",
  "id": "CVE-2026-68418",
  "modified": "2026-08-12T03:51:32.001477547Z",
  "published": "2026-08-10T12:04:38.930Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/728211c815f6eef28dd3df2a5b6297483185aa20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9b0889071569d43623c260074e159cd8f26adb1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec675b4cdfd378d8c9dd8c93126c024f2469bd79"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68418.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68418"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "RDMA/irdma: Prevent user-triggered null deref on QP create"
}