fkie_cve-2023-53590
Vulnerability from fkie_nvd
Published
2025-10-04 16:15
Modified
2025-10-06 14:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: sctp: add a refcnt in sctp_stream_priorities to avoid a nested loop With this refcnt added in sctp_stream_priorities, we don't need to traverse all streams to check if the prio is used by other streams when freeing one stream's prio in sctp_sched_prio_free_sid(). This can avoid a nested loop (up to 65535 * 65535), which may cause a stuck as Ying reported: watchdog: BUG: soft lockup - CPU#23 stuck for 26s! [ksoftirqd/23:136] Call Trace: <TASK> sctp_sched_prio_free_sid+0xab/0x100 [sctp] sctp_stream_free_ext+0x64/0xa0 [sctp] sctp_stream_free+0x31/0x50 [sctp] sctp_association_free+0xa5/0x200 [sctp] Note that it doesn't need to use refcount_t type for this counter, as its accessing is always protected under the sock lock. v1->v2: - add a check in sctp_sched_prio_set to avoid the possible prio_head refcnt overflow.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/03c3a5584a0a29821e59b7834635ce823050caaa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/68ba44639537de6f91fe32783766322d41848127
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d529928ea212127851a2df8c40d822237ca946b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ee401f89cdb10f39098c0656d695b2bc4052100
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf5540cbd20e2dae2c81ab9b31deef41ef147d0a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cec326443f01283ef68ea00c06ea073b1835a562
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027t need to\ntraverse all streams to check if the prio is used by other streams\nwhen freeing one stream\u0027s 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\u0027t 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",
  "lastModified": "2025-10-06T14:56:21.733",
  "metrics": {},
  "published": "2025-10-04T16:15:55.437",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/03c3a5584a0a29821e59b7834635ce823050caaa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/68ba44639537de6f91fe32783766322d41848127"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6d529928ea212127851a2df8c40d822237ca946b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8ee401f89cdb10f39098c0656d695b2bc4052100"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bf5540cbd20e2dae2c81ab9b31deef41ef147d0a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cec326443f01283ef68ea00c06ea073b1835a562"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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