{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "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"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  af_unix: Update last skb marker in manage_oob().  Fahad Alharbi reported that blocking recv(MSG_PEEK) could hog CPU due to OOB skb.  In the following cases, manage_oob() skips OOB skb(s) and returns NULL for the last recv(MSG_PEEK):    socketpair(AF_UNIX, SOCK_STREAM, 0, sk);    1) skb -\u003e OOB skb -\u003e NULL      send(sk[0], \"ab\", 2, MSG_OOB);      recv(sk[1], buf, 0, MSG_PEEK);    2) skb -\u003e consumed OOB skb -\u003e NULL      send(sk[0], \"ab\", 2, MSG_OOB);      recv(sk[1], buf, 1, MSG_OOB);      recv(sk[1], buf, 0, MSG_PEEK);    3) consumed OOB skb -\u003e OOB skb -\u003e NULL      send(sk[0], \"a\", 1, MSG_OOB);      recv(sk[1], buf, 0, MSG_OOB);      send(sk[0], \"b\", 1, MSG_OOB);      recv(sk[1], buf, 1, MSG_PEEK);  Then, @copied is 0 in unix_stream_read_generic() (zero-length buffer, or non-OOB skb is not yet consumed), and unix_stream_data_wait() is called.  However, it returns immediately because @last is not updated in unix_stream_read_generic(), and the thread busy-waits for a new skb.  Let's update @last in manage_oob().  For MSG_PEEK, @last is updated with the skipped OOB, and for the non-peek case, @last matches the returned value (when !copied) because OOB is unlinked.  Note that manage_oob() is inlined and no stack canary is added.",
  "id": "DEBIAN-CVE-2026-97985",
  "modified": "2026-09-26T04:47:32.111257452Z",
  "published": "2026-09-25T11:17:26.560Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-97985"
    }
  ],
  "upstream": [
    "CVE-2026-97985"
  ]
}