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CVE-2025-68168— jfs: fix uninitialized waitqueue in transaction manager

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未初始化TxBlock[0].waitor等待队列，可能导致系统崩溃。

CVSS 7.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 28

VendorProduct Version RangeStatus
Linux Linux 2a8807f9f511c64de0c7cc9900a1683e3d72a3e5< d6af7fce2e162ac68e85d3a11eb6ac8c35b24b64 affected
5c094ca994824e038b6a97835ded4e5d1d808504< 8cae9cf23e0bd424ac904e753639a587543ce03a affected
2febd5f81e4bfba61d9f374dcca628aff374cc56< a2aa97cde9857f881920635a2e3d3b11769619c5 affected
aa7cdf487ab3fa47284daaccc3d7d5de01c6a84c< d2dd7ca05a11685c314e62802a55e8d67a90e974 affected
95e2b352c03b0a86c5717ba1d24ea20969abcacc< 2a9575a372182ca075070b3cd77490dcf0c951e7 affected
95e2b352c03b0a86c5717ba1d24ea20969abcacc< cbf2f527ae4ca7c7dabce42e85e8deb58588a37e affected
95e2b352c03b0a86c5717ba1d24ea20969abcacc< 038861414ab383b41dd35abbf9ff0ef715592d53 affected
95e2b352c03b0a86c5717ba1d24ea20969abcacc< 300b072df72694ea330c4c673c035253e07827b8 affected
… +20 more rows
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I. Basic Information for CVE-2025-68168

Vulnerability Information
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Vulnerability Title
jfs: fix uninitialized waitqueue in transaction manager
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: jfs: fix uninitialized waitqueue in transaction manager The transaction manager initialization in txInit() was not properly initializing TxBlock[0].waitor waitqueue, causing a crash when txEnd(0) is called on read-only filesystems. When a filesystem is mounted read-only, txBegin() returns tid=0 to indicate no transaction. However, txEnd(0) still gets called and tries to access TxBlock[0].waitor via tid_to_tblock(0), but this waitqueue was never initialized because the initialization loop started at index 1 instead of 0. This causes a 'non-static key' lockdep warning and system crash: INFO: trying to register non-static key in txEnd Fix by ensuring all transaction blocks including TxBlock[0] have their waitqueues properly initialized during txInit().
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未初始化TxBlock[0].waitor等待队列，可能导致系统崩溃。
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 2a8807f9f511c64de0c7cc9900a1683e3d72a3e5 ~ d6af7fce2e162ac68e85d3a11eb6ac8c35b24b64 -
Linux Linux 6.5 -

II. Public POCs for CVE-2025-68168

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III. Intelligence Information for CVE-2025-68168

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Other References for CVE-2025-68168 (8)

Same Patch Batch · Linux · 2025-12-16 · 156 CVEs total

CVE-2025-68192 9.8 CRITICAL net: usb: qmi_wwan: initialize MAC header offset in qmimux_rx_fixup
CVE-2025-68301 9.8 CRITICAL net: atlantic: fix fragment overflow handling in RX path
CVE-2025-40350 9.8 CRITICAL net/mlx5e: RX, Fix generating skb from non-linear xdp_buff for striding RQ
CVE-2025-68284 9.8 CRITICAL libceph: prevent potential out-of-bounds writes in handle_auth_session_key()
CVE-2025-68285 9.8 CRITICAL libceph: fix potential use-after-free in have_mon_and_osd_map()
CVE-2025-68263 9.8 CRITICAL ksmbd: ipc: fix use-after-free in ipc_msg_send_request
CVE-2025-68315 9.8 CRITICAL f2fs: fix to detect potential corrupted nid in free_nid_list
CVE-2025-68304 8.8 HIGH Bluetooth: hci_core: lookup hci_conn on RX path on protocol side
CVE-2025-68256 8.8 HIGH staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser
CVE-2025-68255 8.8 HIGH staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing
CVE-2025-68226 8.8 HIGH smb: client: fix incomplete backport in cfids_invalidation_worker()
CVE-2025-68314 8.8 HIGH drm/msm: make sure last_fence is always updated
CVE-2025-40362 8.8 HIGH ceph: fix multifs mds auth caps issue
CVE-2025-68250 8.2 HIGH hung_task: fix warnings caused by unaligned lock pointers
CVE-2025-68181 7.8 HIGH drm/radeon: Remove calls to drm_put_dev()
CVE-2025-68183 7.8 HIGH ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr
CVE-2025-68260 7.8 HIGH rust_binder: fix race condition on death_list
CVE-2025-40354 7.8 HIGH drm/amd/display: increase max link count and fix link->enc NULL pointer access
CVE-2025-68294 7.8 HIGH io_uring/net: ensure vectored buffer node import is tied to notification
CVE-2025-68179 7.8 HIGH s390: Disable ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP

Showing top 20 of 156 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68168

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