{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a05bf6d9e621fa71e89ccebe3047ba45218d7b38"
            },
            {
              "fixed": "8bbede0afced346b24e4fbde0c68cf12980ba948"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
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        {
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            {
              "introduced": "b94a6ccbaf1104dd980150a65fdeb2f69d17d2f5"
            },
            {
              "fixed": "6563b4eb38c35d75892445bcf8aacdc29914821c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "46cb765e2e5ad52303ea157e10d370bb6b7acbbf"
            },
            {
              "fixed": "d3b642cf95d48234590cc91450d8705a9bf6b540"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "d2bc90cf6c75cb96d2ce549be6c35efa3099d25b"
            },
            {
              "fixed": "a962bc8508592c4d51092edac68579bd8b18fe44"
            },
            {
              "fixed": "16c8ae9735c5bd7e54dd7478d6348e0fc860842d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "c580087743712112778a06d65a4074053072d7bf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.143"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.12.93"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.18.35"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "7.0.11"
            },
            {
              "fixed": "7.1"
            }
          ],
          "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": "6.6.145"
            }
          ],
          "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-2026-74435.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc\n\nrxrpc_recvmsg_data() calls rxrpc_verify_data() whenever the\nrxrpc_call.rx_dec_buffer is unallocated and assumes that upon\nsuccessful return that rx_dec_buffer must be allocated.\nHowever, rxrpc_verify_data() does not request an allocation if\nthe rxrpc_skb_priv.len is zero.\n\nIn addition, failure to allocate rx_dec_buffer will result in a\ncall to skb_copy_bits() with a NULL destination which can\ntrigger a NULL pointer dereference.\n\nTo prevent these issues rxrpc_verify_data() is modified to\nalways attempt to allocate the rxrpc_call.rx_dec_buffer if it\nis NULL.\n\nThis issue was identified with assistance of a private\nsashiko instance.",
  "id": "CVE-2026-74435",
  "modified": "2026-08-18T03:31:27.816736547Z",
  "published": "2026-08-15T05:59:34.073Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16c8ae9735c5bd7e54dd7478d6348e0fc860842d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6563b4eb38c35d75892445bcf8aacdc29914821c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bbede0afced346b24e4fbde0c68cf12980ba948"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a962bc8508592c4d51092edac68579bd8b18fe44"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3b642cf95d48234590cc91450d8705a9bf6b540"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74435.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74435"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc"
}