{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.48-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.16.8-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  bpf: Fix out-of-bounds dynptr write in bpf_crypto_crypt  Stanislav reported that in bpf_crypto_crypt() the destination dynptr's size is not validated to be at least as large as the source dynptr's size before calling into the crypto backend with 'len = src_len'. This can result in an OOB write when the destination is smaller than the source.  Concretely, in mentioned function, psrc and pdst are both linear buffers fetched from each dynptr:    psrc = __bpf_dynptr_data(src, src_len);   [...]   pdst = __bpf_dynptr_data_rw(dst, dst_len);   [...]   err = decrypt ?         ctx-\u003etype-\u003edecrypt(ctx-\u003etfm, psrc, pdst, src_len, piv) :         ctx-\u003etype-\u003eencrypt(ctx-\u003etfm, psrc, pdst, src_len, piv);  The crypto backend expects pdst to be large enough with a src_len length that can be written. Add an additional src_len \u003e dst_len check and bail out if it's the case. Note that these kfuncs are accessible under root privileges only.",
  "id": "DEBIAN-CVE-2025-39917",
  "modified": "2026-04-28T19:48:12.231967788Z",
  "published": "2025-10-01T08:15:34.887Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2025-39917"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2025-39917"
  ]
}