{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8700e3e7c4857d28ebaa824509934556da0b3e76"
            },
            {
              "fixed": "2e60378fb3c8b51c94103bb40014c4fe38fa5033"
            },
            {
              "fixed": "fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78"
            },
            {
              "fixed": "9fa785137303f7109c23dea779b8dedc67c9b531"
            },
            {
              "fixed": "5420eebf3b3c162bfaf965f30e61cd1d689e5732"
            },
            {
              "fixed": "a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b"
            },
            {
              "fixed": "d6ab440240a04b8737ee4c7bb21af9182e451733"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.8.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74377.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Copy WQE to local buffer in non-SRQ receive path\n\nFor non-SRQ QPs, the responder reads WQE fields directly from the\nshared queue buffer mapped into userspace. This allows a malicious\nuser to modify fields like num_sge or sge entries while the kernel\nis processing the WQE, leading to out-of-bounds reads in\nrxe_resp_check_length() and copy_data().\n\nIntroduce get_recv_wqe() that validates num_sge and copies the WQE\nto a kernel-local buffer before processing, matching the approach\nalready used for SRQ WQEs in get_srq_wqe(). The srq_wqe buffer is\nreused since SRQ and non-SRQ paths are mutually exclusive per QP.",
  "id": "CVE-2026-74377",
  "modified": "2026-08-18T03:31:06.339060057Z",
  "published": "2026-08-15T05:58:55.704Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e60378fb3c8b51c94103bb40014c4fe38fa5033"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5420eebf3b3c162bfaf965f30e61cd1d689e5732"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fa785137303f7109c23dea779b8dedc67c9b531"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d6ab440240a04b8737ee4c7bb21af9182e451733"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74377.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74377"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "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/rxe: Copy WQE to local buffer in non-SRQ receive path"
}