libceph: remove debugfs files before client teardown
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.265, 5.15.216, 6.1.183, 6.12.101, 6.18.42, 6.6.148, 7.1.6
- CVEs
- CVE-2026-68153
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 03:01 UTC · Revision 1
Source evidence
libceph: remove debugfs files before client teardown
core-osv · Original sourcePublished 10 Aug 2026, 11:59 UTC
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.
osv:CVE-2026-68153
Kernel
Fixed versions: 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6
Complete source record
{
"id": "81735ec3788989cf1bb370fba3a1714063157ea494b4b6a6d1ee87dea7a4dc96",
"url": "https://osv.dev/vulnerability/CVE-2026-68153",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "libceph: remove debugfs files before client teardown",
"summary": "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.",
"evidence": "osv:CVE-2026-68153",
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{
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"modified": "2026-10-28T02:30:49.067917774Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/fe46b7e06f14f6f94766832df309b249cb689d27",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68153.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-68153",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68153.json"
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"related_cves": [
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 517582,
"published_at": "2026-08-10T11:59:19.302+00:00"
}