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CVE-2025-68185— nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing

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nfs4_setup_readdir中d_parent->d_inode访问缺少锁定，可能导致竞争条件。

AI Predicted 3.3 Difficulty: Theoretical EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6025f641a0e30afdc5aa62017397b1860ad9f677 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< e6cafe71eb3b5579b245ba1bd528a181e77f3df1 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< fa4daf7d11e45b72aad5d943a7ab991f869fff79 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 504b3fb9948a9e96ebbabdee0d33966a8bab15cb affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< eacfd08b26a062f1095b18719715bc82ad35312e affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 40be5b9080114f18b0cea386db415b68a7273c1a affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f5e570eaab36a110c6ffda32b87c51170990c2d1 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< a890a2e339b929dbd843328f9a92a1625404fe63 affected
… +10 more rows
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I. Basic Information for CVE-2025-68185

Vulnerability Information
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Vulnerability Title
nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing Theoretically it's an oopsable race, but I don't believe one can manage to hit it on real hardware; might become doable on a KVM, but it still won't be easy to attack. Anyway, it's easy to deal with - since xdr_encode_hyper() is just a call of put_unaligned_be64(), we can put that under ->d_lock and be done with that.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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nfs4_setup_readdir中d_parent->d_inode访问缺少锁定，可能导致竞争条件。
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 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 6025f641a0e30afdc5aa62017397b1860ad9f677 -
Linux Linux 2.6.12 -

II. Public POCs for CVE-2025-68185

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III. Intelligence Information for CVE-2025-68185

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Other References for CVE-2025-68185 (8)

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

CVE-2025-68284 9.8 CRITICAL libceph: prevent potential out-of-bounds writes in handle_auth_session_key()
CVE-2025-40350 9.8 CRITICAL net/mlx5e: RX, Fix generating skb from non-linear xdp_buff for striding RQ
CVE-2025-68263 9.8 CRITICAL ksmbd: ipc: fix use-after-free in ipc_msg_send_request
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-2025-68285 9.8 CRITICAL libceph: fix potential use-after-free in have_mon_and_osd_map()
CVE-2025-68315 9.8 CRITICAL f2fs: fix to detect potential corrupted nid in free_nid_list
CVE-2025-68226 8.8 HIGH smb: client: fix incomplete backport in cfids_invalidation_worker()
CVE-2025-68255 8.8 HIGH staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing
CVE-2025-68256 8.8 HIGH staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser
CVE-2025-68304 8.8 HIGH Bluetooth: hci_core: lookup hci_conn on RX path on protocol side
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-2025-68183 7.8 HIGH ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr
CVE-2025-68212 7.8 HIGH fs: Fix uninitialized 'offp' in statmount_string()
CVE-2025-68208 7.8 HIGH bpf: account for current allocated stack depth in widen_imprecise_scalars()
CVE-2025-68207 7.8 HIGH drm/xe/guc: Synchronize Dead CT worker with unbind
CVE-2025-68189 7.8 HIGH drm/msm: Fix GEM free for imported dma-bufs
CVE-2025-68181 7.8 HIGH drm/radeon: Remove calls to drm_put_dev()

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-2025-68185

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