{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d1775a177f7f38156d541c8a3e3c91eaa6e69699"
            },
            {
              "fixed": "07cbb1bd424370671814a862913c99a6e1441588"
            },
            {
              "fixed": "e51f42114abbdf47f29dda43e7826be28907fcd2"
            },
            {
              "fixed": "3bfbf5f0a99c991769ec562721285df7ab69240b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.15.0"
            },
            {
              "fixed": "6.18.25"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31719.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: krb5enc - fix async decrypt skipping hash verification\n\nkrb5enc_dispatch_decrypt() sets req-\u003ebase.complete as the skcipher\ncallback, which is the caller's own completion handler. When the\nskcipher completes asynchronously, this signals \"done\" to the caller\nwithout executing krb5enc_dispatch_decrypt_hash(), completely bypassing\nthe integrity verification (hash check).\n\nCompare with the encrypt path which correctly uses\nkrb5enc_encrypt_done as an intermediate callback to chain into the\nhash computation on async completion.\n\nFix by adding krb5enc_decrypt_done as an intermediate callback that\nchains into krb5enc_dispatch_decrypt_hash() upon async skcipher\ncompletion, matching the encrypt path's callback pattern.\n\nAlso fix EBUSY/EINPROGRESS handling throughout: remove\nkrb5enc_request_complete() which incorrectly swallowed EINPROGRESS\nnotifications that must be passed up to callers waiting on backlogged\nrequests, and add missing EBUSY checks in krb5enc_encrypt_ahash_done\nfor the dispatch_encrypt return value.\n\n\nUnset MAY_BACKLOG on the async completion path so the user won't\nsee back-to-back EINPROGRESS notifications.",
  "id": "CVE-2026-31719",
  "modified": "2026-07-15T01:48:59.644568381Z",
  "published": "2026-05-01T13:56:13.385Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07cbb1bd424370671814a862913c99a6e1441588"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bfbf5f0a99c991769ec562721285df7ab69240b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e51f42114abbdf47f29dda43e7826be28907fcd2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31719.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31719"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "crypto: krb5enc - fix async decrypt skipping hash verification"
}