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CVE-2026-68153— libceph: remove debugfs files before client teardown

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 2.6.34版本存在安全漏洞，该漏洞源于在移除debugfs文件之前拆除监控客户端，导致并发读取monmap debugfs文件时访问已释放的内存，触发释放后重用。

CVSS 7.8 · High EPSS 0.13% · P2

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 76aa844d5b2fb8c839180d3f5874e333b297e5fd< ac78549d186090ee7125d28c3a8c376573b36194 affected
76aa844d5b2fb8c839180d3f5874e333b297e5fd< 463a264e9094384112a5c8b46f0a9ddaf8566904 affected
76aa844d5b2fb8c839180d3f5874e333b297e5fd< fe46b7e06f14f6f94766832df309b249cb689d27 affected
76aa844d5b2fb8c839180d3f5874e333b297e5fd< fc1010e7e0204ece6cc0f9af4f473e9553535eab affected
76aa844d5b2fb8c839180d3f5874e333b297e5fd< d3dc8889d39a676bf840132bd5c5c48cb0daba23 affected
76aa844d5b2fb8c839180d3f5874e333b297e5fd< 8f5a3abc54ba24dbceb14cc3a719908c4f688091 affected
76aa844d5b2fb8c839180d3f5874e333b297e5fd< b9fedda2f628e030384228de0dafc574b7fb0c2f affected
76aa844d5b2fb8c839180d3f5874e333b297e5fd< e4c804726c4afce3ba648b982d564f6af2cfa328 affected
… +10 more rows
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I. Basic Information for CVE-2026-68153

Vulnerability Information
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Vulnerability Title
libceph: remove debugfs files before client teardown
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 2.6.34版本存在安全漏洞，该漏洞源于在移除debugfs文件之前拆除监控客户端，导致并发读取monmap debugfs文件时访问已释放的内存，触发释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 76aa844d5b2fb8c839180d3f5874e333b297e5fd ~ ac78549d186090ee7125d28c3a8c376573b36194 -
Linux Linux 2.6.34 -

II. Public POCs for CVE-2026-68153

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III. Intelligence Information for CVE-2026-68153

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Patches & Fixes for CVE-2026-68153 (7)

Same Patch Batch · Linux · 2026-08-10 · 344 CVEs total

CVE-2026-68136 9.8 CRITICAL net: gro: fix double aggregation of flush-marked skbs
CVE-2026-68144 9.8 CRITICAL phonet: pep: fix use-after-free in pep_get_sb()
CVE-2026-68127 9.8 CRITICAL ila: reload IPv6 header after pskb_may_pull in checksum adjust
CVE-2026-68302 9.8 CRITICAL amt: re-read skb header pointers after every pull
CVE-2026-68154 9.8 CRITICAL libceph: reject zero bucket types in crush_decode
CVE-2026-68156 9.8 CRITICAL libceph: refresh auth->authorizer_buf{,_len} after authorizer update
CVE-2026-68158 9.8 CRITICAL libceph: Fix multiplication overflow in decode_new_up_state_weight()
CVE-2026-68159 9.8 CRITICAL libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
CVE-2026-68160 9.8 CRITICAL ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()
CVE-2026-68300 9.8 CRITICAL sctp: auth: verify auth requirement when auth_chunk is NULL
CVE-2026-68161 9.8 CRITICAL sctp: close UDP tunnel sockets during netns teardown
CVE-2026-68117 9.8 CRITICAL tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
CVE-2026-68388 9.8 CRITICAL smb/client: handle overlapping allocated ranges in fallocate
CVE-2026-68137 9.8 CRITICAL net/x25: fix use-after-free in x25_kill_by_neigh()
CVE-2026-68426 9.8 CRITICAL xfrm: fix stale skb->prev after async crypto steals a GSO segment
CVE-2026-68385 9.8 CRITICAL s390/checksum: Fix csum_partial() without vector facility
CVE-2026-68123 9.8 CRITICAL openvswitch: fix GSO userspace truncation underflow
CVE-2026-68381 9.8 CRITICAL ksmbd: pin conn during async oplock break notification
CVE-2026-68170 9.8 CRITICAL mptcp: fix stale skb->sk reference on subflow close
CVE-2026-68124 9.6 CRITICAL mctp: serial: handle zero-length frames to prevent rx buffer overflow

Showing top 20 of 344 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68153

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