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CVE-2023-53867 ceph: fix potential use-after-free bug when trimming caps

🗓️ 24 Dec 2025 10:55:25Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 26 Views

Ceph fixes use-after-free when trimming caps by validating cap after acquiring i_ceph_lock.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ceph/caps.c",
      "fs/ceph/debugfs.c",
      "fs/ceph/mds_client.c",
      "fs/ceph/mds_client.h",
      "fs/ceph/super.h"
    ],
    "versions": [
      {
        "version": "2f2dc053404febedc9c273452d9d518fb31fde72",
        "lessThan": "2b2515b8095cf2149bef44383a99d5b5677f1831",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2f2dc053404febedc9c273452d9d518fb31fde72",
        "lessThan": "448875a73e16ba7d81dec9274ce9d33a12d092fb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2f2dc053404febedc9c273452d9d518fb31fde72",
        "lessThan": "ae6e935618d99cdba11eab4714092e7e5f13cf7e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2f2dc053404febedc9c273452d9d518fb31fde72",
        "lessThan": "aaf67de78807c59c35bafb5003d4fb457c764800",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ceph/caps.c",
      "fs/ceph/debugfs.c",
      "fs/ceph/mds_client.c",
      "fs/ceph/mds_client.h",
      "fs/ceph/super.h"
    ],
    "versions": [
      {
        "version": "2.6.34",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.34",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.28",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.2.15",
        "lessThanOrEqual": "6.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.3.2",
        "lessThanOrEqual": "6.3.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.4",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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11 May 2026 19:53Current
EPSS0.00168
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