{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a7555681e50bdebed2c40ff7404ee73c2e932993"
            },
            {
              "fixed": "cec326443f01283ef68ea00c06ea073b1835a562"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "176ee6c673ccd118e9392fd2dbb165423bdb99ca"
            },
            {
              "fixed": "8ee401f89cdb10f39098c0656d695b2bc4052100"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0dfb9a566327182387c90100ea54d8426cee8c67"
            },
            {
              "fixed": "bf5540cbd20e2dae2c81ab9b31deef41ef147d0a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "9ed7bfc79542119ac0a9e1ce8a2a5285e43433e9"
            },
            {
              "fixed": "03c3a5584a0a29821e59b7834635ce823050caaa"
            },
            {
              "fixed": "6d529928ea212127851a2df8c40d822237ca946b"
            },
            {
              "fixed": "68ba44639537de6f91fe32783766322d41848127"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "fa20f88271259d42ebe66f0a8c4c20199e888c99"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53590.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: add a refcnt in sctp_stream_priorities to avoid a nested loop\n\nWith this refcnt added in sctp_stream_priorities, we don't need to\ntraverse all streams to check if the prio is used by other streams\nwhen freeing one stream's prio in sctp_sched_prio_free_sid(). This\ncan avoid a nested loop (up to 65535 * 65535), which may cause a\nstuck as Ying reported:\n\n    watchdog: BUG: soft lockup - CPU#23 stuck for 26s! [ksoftirqd/23:136]\n    Call Trace:\n     \u003cTASK\u003e\n     sctp_sched_prio_free_sid+0xab/0x100 [sctp]\n     sctp_stream_free_ext+0x64/0xa0 [sctp]\n     sctp_stream_free+0x31/0x50 [sctp]\n     sctp_association_free+0xa5/0x200 [sctp]\n\nNote that it doesn't need to use refcount_t type for this counter,\nas its accessing is always protected under the sock lock.\n\nv1-\u003ev2:\n - add a check in sctp_sched_prio_set to avoid the possible prio_head\n   refcnt overflow.",
  "id": "CVE-2023-53590",
  "modified": "2026-04-01T23:07:59.621355522Z",
  "published": "2025-10-04T15:44:04.733Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03c3a5584a0a29821e59b7834635ce823050caaa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68ba44639537de6f91fe32783766322d41848127"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6d529928ea212127851a2df8c40d822237ca946b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ee401f89cdb10f39098c0656d695b2bc4052100"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf5540cbd20e2dae2c81ab9b31deef41ef147d0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cec326443f01283ef68ea00c06ea073b1835a562"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53590.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53590"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop"
}