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libceph: remove debugfs files before client teardown

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: libceph: remove debugfs files before client teardown ceph_destroy_client() tears down the monitor client before removing the per-client debugfs files. A concurrent read of the monmap debugfs file can enter monmap_show() after ceph_monc_stop() has freed monc->monmap, triggering a use-after-free. Remove the debugfs files before stopping the OSD and monitor clients. debugfs_remove() drains active handlers and prevents new accesses, so the debugfs callbacks can no longer race the rest of client teardown.

Announced Source revision 1
Original source ↗

CVE-2026-68153

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-68153

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
        "lessThan": "ac78549d186090ee7125d28c3a8c376573b36194",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
        "lessThan": "463a264e9094384112a5c8b46f0a9ddaf8566904",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
        "lessThan": "fe46b7e06f14f6f94766832df309b249cb689d27",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
        "lessThan": "fc1010e7e0204ece6cc0f9af4f473e9553535eab",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
        "lessThan": "d3dc8889d39a676bf840132bd5c5c48cb0daba23",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
        "lessThan": "8f5a3abc54ba24dbceb14cc3a719908c4f688091",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
        "lessThan": "b9fedda2f628e030384228de0dafc574b7fb0c2f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
        "lessThan": "e4c804726c4afce3ba648b982d564f6af2cfa328",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/ceph/ceph_common.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.34"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.34",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.265",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.216",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.183",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.148",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.101",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.42",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ceph/ceph_common.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-68153

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41139 · Revision 1
Added to Heist Feed
Publisher date
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