{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "6787927475e52f6933e3affce365dabb2aa2fadf"
            },
            {
              "fixed": "600feb0a66a98c6b7f6f02b5f3612e75f9b8540f"
            },
            {
              "fixed": "3bc9998041076ee05d3f312a22cee6b2ca35527f"
            },
            {
              "fixed": "579956f9f297eb1b6a5d24de313f3acccee1f9d5"
            },
            {
              "fixed": "a360d3815aae1f00dd71b7714a846482e85cc1f7"
            },
            {
              "fixed": "c2ebfbe63deb7bfd4dc2532bae62a7ed67713272"
            },
            {
              "fixed": "2754e7b3d64748643df867d1ea6fec522914b635"
            },
            {
              "fixed": "338c5edeb6ae3f12a4b84dff9d71f6f7f8c202c3"
            },
            {
              "fixed": "6c5a9baa15de240e747263aba435a0951da8d8d2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.20.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.167"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.130"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.78"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.19"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43411.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: fix divide-by-zero in tipc_sk_filter_connect()\n\nA user can set conn_timeout to any value via\nsetsockopt(TIPC_CONN_TIMEOUT), including values less than 4.  When a\nSYN is rejected with TIPC_ERR_OVERLOAD and the retry path in\ntipc_sk_filter_connect() executes:\n\n    delay %= (tsk-\u003econn_timeout / 4);\n\nIf conn_timeout is in the range [0, 3], the integer division yields 0,\nand the modulo operation triggers a divide-by-zero exception, causing a\nkernel oops/panic.\n\nFix this by clamping conn_timeout to a minimum of 4 at the point of use\nin tipc_sk_filter_connect().\n\nOops: divide error: 0000 [#1] SMP KASAN NOPTI\nCPU: 0 UID: 0 PID: 119 Comm: poc-F144 Not tainted 7.0.0-rc2+\nRIP: 0010:tipc_sk_filter_rcv (net/tipc/socket.c:2236 net/tipc/socket.c:2362)\nCall Trace:\n tipc_sk_backlog_rcv (include/linux/instrumented.h:82 include/linux/atomic/atomic-instrumented.h:32 include/net/sock.h:2357 net/tipc/socket.c:2406)\n __release_sock (include/net/sock.h:1185 net/core/sock.c:3213)\n release_sock (net/core/sock.c:3797)\n tipc_connect (net/tipc/socket.c:2570)\n __sys_connect (include/linux/file.h:62 include/linux/file.h:83 net/socket.c:2098)",
  "id": "CVE-2026-43411",
  "modified": "2026-08-12T03:51:44.187119566Z",
  "published": "2026-05-08T14:21:49.543Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2754e7b3d64748643df867d1ea6fec522914b635"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/338c5edeb6ae3f12a4b84dff9d71f6f7f8c202c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bc9998041076ee05d3f312a22cee6b2ca35527f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/579956f9f297eb1b6a5d24de313f3acccee1f9d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/600feb0a66a98c6b7f6f02b5f3612e75f9b8540f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c5a9baa15de240e747263aba435a0951da8d8d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a360d3815aae1f00dd71b7714a846482e85cc1f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c2ebfbe63deb7bfd4dc2532bae62a7ed67713272"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43411.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43411"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "tipc: fix divide-by-zero in tipc_sk_filter_connect()"
}