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CVE-2025-40362

🗓️ 16 Dec 2025 13:40:02Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 63 Views🌐 WEB

Ceph fixes multifs MDS auth caps by validating fsname to prevent cross-filesystem access.

Related
Detection
Affected
Refs
Paths
Vulners
CNA
Node
OR
linuxlinux_kernelRange6.10–6.12.58
linuxlinux_kernelRange6.13.0–6.17.8
linuxlinux_kernelRange6.18.0≥
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ceph/mds_client.c",
      "fs/ceph/mdsmap.c",
      "fs/ceph/super.c",
      "fs/ceph/super.h"
    ],
    "versions": [
      {
        "version": "596afb0b8933ba6ed7227adcc538db26feb25c74",
        "lessThan": "07640d34a781bb2e39020a39137073c03c4aa932",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "596afb0b8933ba6ed7227adcc538db26feb25c74",
        "lessThan": "ca3da8b27ab9a0923ad477447cfb8fc7f4b4c523",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "596afb0b8933ba6ed7227adcc538db26feb25c74",
        "lessThan": "22c73d52a6d05c5a2053385c0d6cd9984732799d",
        "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/mds_client.c",
      "fs/ceph/mdsmap.c",
      "fs/ceph/super.c",
      "fs/ceph/super.h"
    ],
    "versions": [
      {
        "version": "6.10",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.10",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.58",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17.8",
        "lessThanOrEqual": "6.17.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
fsname1path/kmnt_fsname1_usr/file1Cross-filesystem authorization flaw: a user with caps on fsname2 can create a file on fsname1 due to missing validation of fsname in mds auth caps.
client.usrpath/kmnt_fsname1_usr/file1Cross-filesystem authorization flaw: a user with caps on fsname2 can create a file on fsname1 due to missing validation of fsname in mds auth caps.
fsname1path/kmnt_fsname1_usr/admin_file1Cross-filesystem authorization flaw: a user with caps on fsname2 can delete an admin_file1 on fsname1 due to missing validation of fsname in mds auth caps.
client.usrpath/kmnt_fsname1_usr/admin_file1Cross-filesystem authorization flaw: a user with caps on fsname2 can delete an admin_file1 on fsname1 due to missing validation of fsname in mds auth caps.

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15 Oct 2026 22:19Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.8
EPSS0.00163
63