{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "fa619a77046bef30478697aba0553991033afb8e"
            },
            {
              "fixed": "45416c87ebcece1e90f3bc5bc172d106b77c6b69"
            },
            {
              "fixed": "9634fb1f4d404f36a20ffbcb8797369db69b06bb"
            },
            {
              "fixed": "bfb9e8243fd2099d1080d09222964d988f991d9b"
            },
            {
              "fixed": "dfa535c94406c03d3f0c869ef3ba5528e395737c"
            },
            {
              "fixed": "6e1bd7f590b0ccfee07f7fe1d48b92059bd37d72"
            },
            {
              "fixed": "98d2d468b4faa1fdc68c0c6c238389906ee3490c"
            },
            {
              "fixed": "ad9c9ad3204f63a46f0f7de29687a8e512f05e29"
            },
            {
              "fixed": "d2e52d610b9b09694261632340b801a421e0b0c5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.13"
            },
            {
              "fixed": "5.10.265"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.216"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.183"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "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-2026-68425.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/mad: Drop unmatched RMPP responses before reassembly\n\nKernel-handled RMPP receive processing starts reassembly for active\nDATA responses before the response is matched to an outstanding send.\nThe normal match happens later, after ib_process_rmpp_recv_wc() has\neither assembled a complete message or consumed the segment.\n\nThat ordering lets an unsolicited response that routes to a kernel\nRMPP agent by the high TID bits allocate or extend RMPP receive state\nbefore the full TID and source address are checked against a real\nrequest. A reordered burst can therefore reach the receive-side\ninsertion path even though the response would not match any send.\n\nFor kernel-handled RMPP DATA responses, require the existing\nib_find_send_mad() match before entering RMPP reassembly. The matcher\nalready checks the full TID, management class and source address/GID\nagainst the agent wait, backlog and in-flight send lists. If there is\nno match, drop the response without creating RMPP state.\n\nThis leaves the RMPP window behavior unchanged and only rejects\nresponses that have no corresponding request.",
  "id": "CVE-2026-68425",
  "modified": "2026-08-21T03:30:35.001813047Z",
  "published": "2026-08-10T12:04:45.947Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45416c87ebcece1e90f3bc5bc172d106b77c6b69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e1bd7f590b0ccfee07f7fe1d48b92059bd37d72"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9634fb1f4d404f36a20ffbcb8797369db69b06bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98d2d468b4faa1fdc68c0c6c238389906ee3490c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad9c9ad3204f63a46f0f7de29687a8e512f05e29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bfb9e8243fd2099d1080d09222964d988f991d9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2e52d610b9b09694261632340b801a421e0b0c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfa535c94406c03d3f0c869ef3ba5528e395737c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68425.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68425"
    },
    {
      "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:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "IB/mad: Drop unmatched RMPP responses before reassembly"
}