FKIE_CVE-2023-53867

Vulnerability from fkie_nvd - Published: 2025-12-24 11:15 - Updated: 2025-12-29 15:58
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ceph: fix potential use-after-free bug when trimming caps When trimming the caps and just after the 'session->s_cap_lock' is released in ceph_iterate_session_caps() the cap maybe removed by another thread, and when using the stale cap memory in the callbacks it will trigger use-after-free crash. We need to check the existence of the cap just after the 'ci->i_ceph_lock' being acquired. And do nothing if it's already removed.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2b2515b8095cf2149bef44383a99d5b5677f1831
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/448875a73e16ba7d81dec9274ce9d33a12d092fb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aaf67de78807c59c35bafb5003d4fb457c764800
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae6e935618d99cdba11eab4714092e7e5f13cf7e
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix potential use-after-free bug when trimming caps\n\nWhen trimming the caps and just after the \u0027session-\u003es_cap_lock\u0027 is\nreleased in ceph_iterate_session_caps() the cap maybe removed by\nanother thread, and when using the stale cap memory in the callbacks\nit will trigger use-after-free crash.\n\nWe need to check the existence of the cap just after the \u0027ci-\u003ei_ceph_lock\u0027\nbeing acquired. And do nothing if it\u0027s already removed."
    }
  ],
  "id": "CVE-2023-53867",
  "lastModified": "2025-12-29T15:58:56.260",
  "metrics": {},
  "published": "2025-12-24T11:15:51.387",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2b2515b8095cf2149bef44383a99d5b5677f1831"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/448875a73e16ba7d81dec9274ce9d33a12d092fb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aaf67de78807c59c35bafb5003d4fb457c764800"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ae6e935618d99cdba11eab4714092e7e5f13cf7e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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