CVE-2025-68285 (GCVE-0-2025-68285)
Vulnerability from cvelistv5 – Published: 2025-12-16 15:06 – Updated: 2026-08-05 12:10
VLAI
EPSS
VEX
Title
libceph: fix potential use-after-free in have_mon_and_osd_map()
Summary
In the Linux kernel, the following vulnerability has been resolved:
libceph: fix potential use-after-free in have_mon_and_osd_map()
The wait loop in __ceph_open_session() can race with the client
receiving a new monmap or osdmap shortly after the initial map is
received. Both ceph_monc_handle_map() and handle_one_map() install
a new map immediately after freeing the old one
kfree(monc->monmap);
monc->monmap = monmap;
ceph_osdmap_destroy(osdc->osdmap);
osdc->osdmap = newmap;
under client->monc.mutex and client->osdc.lock respectively, but
because neither is taken in have_mon_and_osd_map() it's possible for
client->monc.monmap->epoch and client->osdc.osdmap->epoch arms in
client->monc.monmap && client->monc.monmap->epoch &&
client->osdc.osdmap && client->osdc.osdmap->epoch;
condition to dereference an already freed map. This happens to be
reproducible with generic/395 and generic/397 with KASAN enabled:
BUG: KASAN: slab-use-after-free in have_mon_and_osd_map+0x56/0x70
Read of size 4 at addr ffff88811012d810 by task mount.ceph/13305
CPU: 2 UID: 0 PID: 13305 Comm: mount.ceph Not tainted 6.14.0-rc2-build2+ #1266
...
Call Trace:
<TASK>
have_mon_and_osd_map+0x56/0x70
ceph_open_session+0x182/0x290
ceph_get_tree+0x333/0x680
vfs_get_tree+0x49/0x180
do_new_mount+0x1a3/0x2d0
path_mount+0x6dd/0x730
do_mount+0x99/0xe0
__do_sys_mount+0x141/0x180
do_syscall_64+0x9f/0x100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
</TASK>
Allocated by task 13305:
ceph_osdmap_alloc+0x16/0x130
ceph_osdc_init+0x27a/0x4c0
ceph_create_client+0x153/0x190
create_fs_client+0x50/0x2a0
ceph_get_tree+0xff/0x680
vfs_get_tree+0x49/0x180
do_new_mount+0x1a3/0x2d0
path_mount+0x6dd/0x730
do_mount+0x99/0xe0
__do_sys_mount+0x141/0x180
do_syscall_64+0x9f/0x100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 9475:
kfree+0x212/0x290
handle_one_map+0x23c/0x3b0
ceph_osdc_handle_map+0x3c9/0x590
mon_dispatch+0x655/0x6f0
ceph_con_process_message+0xc3/0xe0
ceph_con_v1_try_read+0x614/0x760
ceph_con_workfn+0x2de/0x650
process_one_work+0x486/0x7c0
process_scheduled_works+0x73/0x90
worker_thread+0x1c8/0x2a0
kthread+0x2ec/0x300
ret_from_fork+0x24/0x40
ret_from_fork_asm+0x1a/0x30
Rewrite the wait loop to check the above condition directly with
client->monc.mutex and client->osdc.lock taken as appropriate. While
at it, improve the timeout handling (previously mount_timeout could be
exceeded in case wait_event_interruptible_timeout() slept more than
once) and access client->auth_err under client->monc.mutex to match
how it's set in finish_auth().
monmap_show() and osdmap_show() now take the respective lock before
accessing the map as well.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 19:31 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < bb4910c5fd436701faf367e1b5476a5a6d2aff1c
(git)
Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 05ec43e9a9de67132dc8cd3b22afef001574947f (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 7c8ccdc1714d9fabecd26e1be7db1771061acc6e (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 183ad6e3b651e8fb0b66d6a2678f4b80bfbba092 (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < e08021b3b56b2407f37b5fe47b654be80cc665fb (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 3fc43120b22a3d4f1fbeff56a35ce2105b6a5683 (git) Affected: 6822d00b5462e7a9dfa11dcc60cc25823a2107c5 , < 076381c261374c587700b3accf410bdd2dba334e (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.35
Unaffected: 0 , < 2.6.35 (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.119 , ≤ 6.6.* (semver) Unaffected: 6.12.61 , ≤ 6.12.* (semver) Unaffected: 6.17.11 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
guessed |
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: fix potential use-after-free in have_mon_and_osd_map()\n\nThe wait loop in __ceph_open_session() can race with the client\nreceiving a new monmap or osdmap shortly after the initial map is\nreceived. Both ceph_monc_handle_map() and handle_one_map() install\na new map immediately after freeing the old one\n\n kfree(monc-\u003emonmap);\n monc-\u003emonmap = monmap;\n\n ceph_osdmap_destroy(osdc-\u003eosdmap);\n osdc-\u003eosdmap = newmap;\n\nunder client-\u003emonc.mutex and client-\u003eosdc.lock respectively, but\nbecause neither is taken in have_mon_and_osd_map() it\u0027s possible for\nclient-\u003emonc.monmap-\u003eepoch and client-\u003eosdc.osdmap-\u003eepoch arms in\n\n client-\u003emonc.monmap \u0026\u0026 client-\u003emonc.monmap-\u003eepoch \u0026\u0026\n client-\u003eosdc.osdmap \u0026\u0026 client-\u003eosdc.osdmap-\u003eepoch;\n\ncondition to dereference an already freed map. This happens to be\nreproducible with generic/395 and generic/397 with KASAN enabled:\n\n BUG: KASAN: slab-use-after-free in have_mon_and_osd_map+0x56/0x70\n Read of size 4 at addr ffff88811012d810 by task mount.ceph/13305\n CPU: 2 UID: 0 PID: 13305 Comm: mount.ceph Not tainted 6.14.0-rc2-build2+ #1266\n ...\n Call Trace:\n \u003cTASK\u003e\n have_mon_and_osd_map+0x56/0x70\n ceph_open_session+0x182/0x290\n ceph_get_tree+0x333/0x680\n vfs_get_tree+0x49/0x180\n do_new_mount+0x1a3/0x2d0\n path_mount+0x6dd/0x730\n do_mount+0x99/0xe0\n __do_sys_mount+0x141/0x180\n do_syscall_64+0x9f/0x100\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n \u003c/TASK\u003e\n\n Allocated by task 13305:\n ceph_osdmap_alloc+0x16/0x130\n ceph_osdc_init+0x27a/0x4c0\n ceph_create_client+0x153/0x190\n create_fs_client+0x50/0x2a0\n ceph_get_tree+0xff/0x680\n vfs_get_tree+0x49/0x180\n do_new_mount+0x1a3/0x2d0\n path_mount+0x6dd/0x730\n do_mount+0x99/0xe0\n __do_sys_mount+0x141/0x180\n do_syscall_64+0x9f/0x100\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n Freed by task 9475:\n kfree+0x212/0x290\n handle_one_map+0x23c/0x3b0\n ceph_osdc_handle_map+0x3c9/0x590\n mon_dispatch+0x655/0x6f0\n ceph_con_process_message+0xc3/0xe0\n ceph_con_v1_try_read+0x614/0x760\n ceph_con_workfn+0x2de/0x650\n process_one_work+0x486/0x7c0\n process_scheduled_works+0x73/0x90\n worker_thread+0x1c8/0x2a0\n kthread+0x2ec/0x300\n ret_from_fork+0x24/0x40\n ret_from_fork_asm+0x1a/0x30\n\nRewrite the wait loop to check the above condition directly with\nclient-\u003emonc.mutex and client-\u003eosdc.lock taken as appropriate. While\nat it, improve the timeout handling (previously mount_timeout could be\nexceeded in case wait_event_interruptible_timeout() slept more than\nonce) and access client-\u003eauth_err under client-\u003emonc.mutex to match\nhow it\u0027s set in finish_auth().\n\nmonmap_show() and osdmap_show() now take the respective lock before\naccessing the map as well."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The race is driven by MON_MAP and OSD_MAP messages received over TCP from a remote Ceph monitor during session establishment.\nAC:L - A malicious monitor can send repeated, closely spaced map updates and wake the mount thread, making the race attacker-amplifiable and reproducible.\nPR:N - Legacy messenger-v1 dispatches monitor map messages without requiring completed CephX authentication, so the remote attacker needs no target-system privileges.\nUI:N - CephFS and RBD sessions are commonly opened automatically during boot or orchestration, requiring no human action once the client is configured.\nS:U - The vulnerable libceph code and the affected kernel resources belong to the same host security authority.\nC:H - The kernel-heap use-after-free permits attacker-shaped reclamation of the freed map object and is conservatively treated as enabling kernel-memory disclosure.\nI:H - Attacker-controlled heap shaping around a kernel use-after-free may provide memory-corruption or control-flow primitives, warranting high integrity impact.\nA:H - The use-after-free is KASAN-reproducible and can cause a kernel oops or panic, taking the host and its Ceph-backed storage offline."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:10:39.092Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/bb4910c5fd436701faf367e1b5476a5a6d2aff1c"
},
{
"url": "https://git.kernel.org/stable/c/05ec43e9a9de67132dc8cd3b22afef001574947f"
},
{
"url": "https://git.kernel.org/stable/c/7c8ccdc1714d9fabecd26e1be7db1771061acc6e"
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},
{
"url": "https://git.kernel.org/stable/c/076381c261374c587700b3accf410bdd2dba334e"
}
],
"title": "libceph: fix potential use-after-free in have_mon_and_osd_map()",
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68285",
"datePublished": "2025-12-16T15:06:07.078Z",
"dateReserved": "2025-12-16T14:48:05.292Z",
"dateUpdated": "2026-08-05T12:10:39.092Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-68285",
"date": "2026-09-14",
"epss": "0.00585",
"percentile": "0.46155"
},
"microsoft_vex": {
"current_release_date": "2026-01-07T14:39:18.000Z",
"cve": "CVE-2025-68285",
"id": "msrc_CVE-2025-68285",
"initial_release_date": "2025-12-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "libceph: fix potential use-after-free in have_mon_and_osd_map()",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68285.json",
"version": "2"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2025-68285\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T16:16:07.293\",\"lastModified\":\"2026-07-30T06:24:36.290\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlibceph: fix potential use-after-free in have_mon_and_osd_map()\\n\\nThe wait loop in __ceph_open_session() can race with the client\\nreceiving a new monmap or osdmap shortly after the initial map is\\nreceived. Both ceph_monc_handle_map() and handle_one_map() install\\na new map immediately after freeing the old one\\n\\n kfree(monc-\u003emonmap);\\n monc-\u003emonmap = monmap;\\n\\n ceph_osdmap_destroy(osdc-\u003eosdmap);\\n osdc-\u003eosdmap = newmap;\\n\\nunder client-\u003emonc.mutex and client-\u003eosdc.lock respectively, but\\nbecause neither is taken in have_mon_and_osd_map() it\u0027s possible for\\nclient-\u003emonc.monmap-\u003eepoch and client-\u003eosdc.osdmap-\u003eepoch arms in\\n\\n client-\u003emonc.monmap \u0026\u0026 client-\u003emonc.monmap-\u003eepoch \u0026\u0026\\n client-\u003eosdc.osdmap \u0026\u0026 client-\u003eosdc.osdmap-\u003eepoch;\\n\\ncondition to dereference an already freed map. This happens to be\\nreproducible with generic/395 and generic/397 with KASAN enabled:\\n\\n BUG: KASAN: slab-use-after-free in have_mon_and_osd_map+0x56/0x70\\n Read of size 4 at addr ffff88811012d810 by task mount.ceph/13305\\n CPU: 2 UID: 0 PID: 13305 Comm: mount.ceph Not tainted 6.14.0-rc2-build2+ #1266\\n ...\\n Call Trace:\\n \u003cTASK\u003e\\n have_mon_and_osd_map+0x56/0x70\\n ceph_open_session+0x182/0x290\\n ceph_get_tree+0x333/0x680\\n vfs_get_tree+0x49/0x180\\n do_new_mount+0x1a3/0x2d0\\n path_mount+0x6dd/0x730\\n do_mount+0x99/0xe0\\n __do_sys_mount+0x141/0x180\\n do_syscall_64+0x9f/0x100\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n \u003c/TASK\u003e\\n\\n Allocated by task 13305:\\n ceph_osdmap_alloc+0x16/0x130\\n ceph_osdc_init+0x27a/0x4c0\\n ceph_create_client+0x153/0x190\\n create_fs_client+0x50/0x2a0\\n ceph_get_tree+0xff/0x680\\n vfs_get_tree+0x49/0x180\\n do_new_mount+0x1a3/0x2d0\\n path_mount+0x6dd/0x730\\n do_mount+0x99/0xe0\\n __do_sys_mount+0x141/0x180\\n do_syscall_64+0x9f/0x100\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\n Freed by task 9475:\\n kfree+0x212/0x290\\n handle_one_map+0x23c/0x3b0\\n ceph_osdc_handle_map+0x3c9/0x590\\n mon_dispatch+0x655/0x6f0\\n ceph_con_process_message+0xc3/0xe0\\n ceph_con_v1_try_read+0x614/0x760\\n ceph_con_workfn+0x2de/0x650\\n process_one_work+0x486/0x7c0\\n process_scheduled_works+0x73/0x90\\n worker_thread+0x1c8/0x2a0\\n kthread+0x2ec/0x300\\n ret_from_fork+0x24/0x40\\n ret_from_fork_asm+0x1a/0x30\\n\\nRewrite the wait loop to check the above condition directly with\\nclient-\u003emonc.mutex and client-\u003eosdc.lock taken as appropriate. While\\nat it, improve the timeout handling (previously mount_timeout could be\\nexceeded in case wait_event_interruptible_timeout() slept more than\\nonce) and access client-\u003eauth_err under client-\u003emonc.mutex to match\\nhow it\u0027s set in finish_auth().\\n\\nmonmap_show() and osdmap_show() now take the respective lock before\\naccessing the map as well.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ceph/ceph_common.c\",\"net/ceph/debugfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\",\"lessThan\":\"bb4910c5fd436701faf367e1b5476a5a6d2aff1c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\",\"lessThan\":\"05ec43e9a9de67132dc8cd3b22afef001574947f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\",\"lessThan\":\"7c8ccdc1714d9fabecd26e1be7db1771061acc6e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\",\"lessThan\":\"183ad6e3b651e8fb0b66d6a2678f4b80bfbba092\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\",\"lessThan\":\"e08021b3b56b2407f37b5fe47b654be80cc665fb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\",\"lessThan\":\"3fc43120b22a3d4f1fbeff56a35ce2105b6a5683\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\",\"lessThan\":\"076381c261374c587700b3accf410bdd2dba334e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ceph/ceph_common.c\",\"net/ceph/debugfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.35\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.35\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.247\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.197\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.159\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.119\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.61\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.17.11\",\"lessThanOrEqual\":\"6.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-06-16T19:31:19.838662Z\",\"id\":\"CVE-2025-68285\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/05ec43e9a9de67132dc8cd3b22afef001574947f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/076381c261374c587700b3accf410bdd2dba334e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/183ad6e3b651e8fb0b66d6a2678f4b80bfbba092\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3fc43120b22a3d4f1fbeff56a35ce2105b6a5683\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7c8ccdc1714d9fabecd26e1be7db1771061acc6e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bb4910c5fd436701faf367e1b5476a5a6d2aff1c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e08021b3b56b2407f37b5fe47b654be80cc665fb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-21T20:04:56+00:00",
"cve": "CVE-2025-68285",
"id": "CVE-2025-68285",
"initial_release_date": "2025-12-16T00:00:00+00:00",
"product_status:fixed": "2560",
"product_status:known_affected": "22",
"product_status:known_not_affected": "108",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68285.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-68285\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-16T19:31:19.838662Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-16T19:31:26.903Z\"}}], \"cna\": {\"title\": \"libceph: fix potential use-after-free in have_mon_and_osd_map()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\", \"lessThan\": \"bb4910c5fd436701faf367e1b5476a5a6d2aff1c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\", \"lessThan\": \"05ec43e9a9de67132dc8cd3b22afef001574947f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\", \"lessThan\": \"7c8ccdc1714d9fabecd26e1be7db1771061acc6e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\", \"lessThan\": \"183ad6e3b651e8fb0b66d6a2678f4b80bfbba092\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\", \"lessThan\": \"e08021b3b56b2407f37b5fe47b654be80cc665fb\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\", \"lessThan\": \"3fc43120b22a3d4f1fbeff56a35ce2105b6a5683\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6822d00b5462e7a9dfa11dcc60cc25823a2107c5\", \"lessThan\": \"076381c261374c587700b3accf410bdd2dba334e\", \"versionType\": \"git\"}], \"programFiles\": [\"net/ceph/ceph_common.c\", \"net/ceph/debugfs.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.35\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.35\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.247\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.197\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.159\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.119\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.61\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.17.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.17.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ceph/ceph_common.c\", \"net/ceph/debugfs.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/bb4910c5fd436701faf367e1b5476a5a6d2aff1c\"}, {\"url\": \"https://git.kernel.org/stable/c/05ec43e9a9de67132dc8cd3b22afef001574947f\"}, {\"url\": \"https://git.kernel.org/stable/c/7c8ccdc1714d9fabecd26e1be7db1771061acc6e\"}, {\"url\": \"https://git.kernel.org/stable/c/183ad6e3b651e8fb0b66d6a2678f4b80bfbba092\"}, {\"url\": \"https://git.kernel.org/stable/c/e08021b3b56b2407f37b5fe47b654be80cc665fb\"}, {\"url\": \"https://git.kernel.org/stable/c/3fc43120b22a3d4f1fbeff56a35ce2105b6a5683\"}, {\"url\": \"https://git.kernel.org/stable/c/076381c261374c587700b3accf410bdd2dba334e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlibceph: fix potential use-after-free in have_mon_and_osd_map()\\n\\nThe wait loop in __ceph_open_session() can race with the client\\nreceiving a new monmap or osdmap shortly after the initial map is\\nreceived. Both ceph_monc_handle_map() and handle_one_map() install\\na new map immediately after freeing the old one\\n\\n kfree(monc-\u003emonmap);\\n monc-\u003emonmap = monmap;\\n\\n ceph_osdmap_destroy(osdc-\u003eosdmap);\\n osdc-\u003eosdmap = newmap;\\n\\nunder client-\u003emonc.mutex and client-\u003eosdc.lock respectively, but\\nbecause neither is taken in have_mon_and_osd_map() it\u0027s possible for\\nclient-\u003emonc.monmap-\u003eepoch and client-\u003eosdc.osdmap-\u003eepoch arms in\\n\\n client-\u003emonc.monmap \u0026\u0026 client-\u003emonc.monmap-\u003eepoch \u0026\u0026\\n client-\u003eosdc.osdmap \u0026\u0026 client-\u003eosdc.osdmap-\u003eepoch;\\n\\ncondition to dereference an already freed map. This happens to be\\nreproducible with generic/395 and generic/397 with KASAN enabled:\\n\\n BUG: KASAN: slab-use-after-free in have_mon_and_osd_map+0x56/0x70\\n Read of size 4 at addr ffff88811012d810 by task mount.ceph/13305\\n CPU: 2 UID: 0 PID: 13305 Comm: mount.ceph Not tainted 6.14.0-rc2-build2+ #1266\\n ...\\n Call Trace:\\n \u003cTASK\u003e\\n have_mon_and_osd_map+0x56/0x70\\n ceph_open_session+0x182/0x290\\n ceph_get_tree+0x333/0x680\\n vfs_get_tree+0x49/0x180\\n do_new_mount+0x1a3/0x2d0\\n path_mount+0x6dd/0x730\\n do_mount+0x99/0xe0\\n __do_sys_mount+0x141/0x180\\n do_syscall_64+0x9f/0x100\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n \u003c/TASK\u003e\\n\\n Allocated by task 13305:\\n ceph_osdmap_alloc+0x16/0x130\\n ceph_osdc_init+0x27a/0x4c0\\n ceph_create_client+0x153/0x190\\n create_fs_client+0x50/0x2a0\\n ceph_get_tree+0xff/0x680\\n vfs_get_tree+0x49/0x180\\n do_new_mount+0x1a3/0x2d0\\n path_mount+0x6dd/0x730\\n do_mount+0x99/0xe0\\n __do_sys_mount+0x141/0x180\\n do_syscall_64+0x9f/0x100\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\n Freed by task 9475:\\n kfree+0x212/0x290\\n handle_one_map+0x23c/0x3b0\\n ceph_osdc_handle_map+0x3c9/0x590\\n mon_dispatch+0x655/0x6f0\\n ceph_con_process_message+0xc3/0xe0\\n ceph_con_v1_try_read+0x614/0x760\\n ceph_con_workfn+0x2de/0x650\\n process_one_work+0x486/0x7c0\\n process_scheduled_works+0x73/0x90\\n worker_thread+0x1c8/0x2a0\\n kthread+0x2ec/0x300\\n ret_from_fork+0x24/0x40\\n ret_from_fork_asm+0x1a/0x30\\n\\nRewrite the wait loop to check the above condition directly with\\nclient-\u003emonc.mutex and client-\u003eosdc.lock taken as appropriate. While\\nat it, improve the timeout handling (previously mount_timeout could be\\nexceeded in case wait_event_interruptible_timeout() slept more than\\nonce) and access client-\u003eauth_err under client-\u003emonc.mutex to match\\nhow it\u0027s set in finish_auth().\\n\\nmonmap_show() and osdmap_show() now take the respective lock before\\naccessing the map as well.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.247\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.197\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.159\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.119\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.61\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.17.11\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18\", \"versionStartIncluding\": \"2.6.35\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:50:12.240Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2025-68285\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-16T19:31:34.116Z\", \"dateReserved\": \"2025-12-16T14:48:05.292Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-12-16T15:06:07.078Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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