{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5f3eea6b7e8f58cf5c8a9d4b9679dc19e9e67ba3"
            },
            {
              "fixed": "494f2bee9d8d0ebcfa249ac41bed7fed26d119b4"
            },
            {
              "fixed": "17893987e52918c23945c42e47e894a936305a25"
            },
            {
              "fixed": "42971ea17c7a8afc0bdd5ca40648bf4e5bb7b810"
            },
            {
              "fixed": "2b63341e2ebc9b6f73cbd9214dbe7d46dd98c718"
            },
            {
              "fixed": "bb63ab52a18273ec68340ac49aebbaa7b514ccd5"
            },
            {
              "fixed": "248433942155b42a0ef04a5806c8aca024ea7c33"
            },
            {
              "fixed": "e70f639aee2ff0def155c256cace9e0f81d998e2"
            },
            {
              "fixed": "d1ebd9081879fd9ae9c8fb7e8928f19cc88ae320"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.10.0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.54"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98370.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix compat ALLOCSPI request use-after-free\n\nxfrm_state_netlink() builds the ALLOCSPI response with\ndump_one_state(), which already calls alloc_compat() with the response\nskb and header.\n\nxfrm_alloc_userspi() then calls alloc_compat() again, but passes the\noriginal request skb and its header. For a compat request, the\ntranslator therefore interprets the 228-byte compat xfrm_userspi_info\nas the 232-byte native layout and reads four bytes past the declared\npayload. It also publishes the translated child through the request's\nfrag_list.\n\nA multicast clone of the request shares skb_shared_info and can observe\nthat child. xfrm_user_rcv_msg() frees it after the request handler\nreturns, racing a compat receiver which may still be copying from it and\nresulting in a use-after-free.\n\nRemove the redundant conversion. The response keeps its correct compat\ntranslation from dump_one_state(), and no child is attached to the\ninbound request.",
  "id": "CVE-2026-98370",
  "modified": "2026-10-08T02:31:08.755394085Z",
  "published": "2026-10-06T08:46:54.981Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17893987e52918c23945c42e47e894a936305a25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/248433942155b42a0ef04a5806c8aca024ea7c33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2b63341e2ebc9b6f73cbd9214dbe7d46dd98c718"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42971ea17c7a8afc0bdd5ca40648bf4e5bb7b810"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/494f2bee9d8d0ebcfa249ac41bed7fed26d119b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb63ab52a18273ec68340ac49aebbaa7b514ccd5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1ebd9081879fd9ae9c8fb7e8928f19cc88ae320"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e70f639aee2ff0def155c256cace9e0f81d998e2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98370.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98370"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "xfrm: fix compat ALLOCSPI request use-after-free"
}