{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.187-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.13-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  xfrm: fix xfrm_state_construct() auth-trunc leak  attach_auth_trunc() can allocate x-\u003eaalg while leaving x-\u003eprops.aalgo at zero when the selected auth algorithm has no sadb_alg_id. One real case is cmac(aes).  xfrm_state_construct() then treats !x-\u003eprops.aalgo as \"no auth algorithm attached yet\" and calls attach_auth(). That overwrites x-\u003eaalg and loses the first allocation. Any later failure or teardown only frees the replacement pointer.  Check whether x-\u003eaalg is already attached instead of inferring that state from x-\u003eprops.aalgo.",
  "id": "DEBIAN-CVE-2026-80843",
  "modified": "2026-09-14T16:47:35.846518661Z",
  "published": "2026-09-04T16:18:12.877Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80843"
    }
  ],
  "upstream": [
    "CVE-2026-80843"
  ]
}