{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b6334d2356fc0922ed01457960f74923058a353a"
            },
            {
              "fixed": "a13c2ac4d480b734342c6fbf8249fc48afd675f3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5895e70f2e6e8dc67b551ca554d6fcde0a7f0467"
            },
            {
              "fixed": "bc2cf5935b4665172235341163315905197ae91d"
            },
            {
              "fixed": "b087913ae88256df66620f7ba0a9776716aeef7e"
            },
            {
              "fixed": "6fd93142dd1d09000c3750af08270f5792523fe9"
            },
            {
              "fixed": "c488df06bd552bb8b6e14fa0cfd5ad986c6e9525"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.64"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.88"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.11.0"
            },
            {
              "fixed": "6.18.30"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "7.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46176.json"
  },
  "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": "CVE-2026-46176",
  "modified": "2026-07-08T05:36:20.737620112Z",
  "published": "2026-05-28T09:36:30.398Z",
  "references": [
    {
      "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"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46176.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:30848"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:33215"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:33685"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:34094"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-46176"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46176.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46176"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482594"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()"
}