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CVE-2025-22026— nfsd: don't ignore the return code of svc_proc_register()

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nfsd忽略svc_proc_register返回码。

AI Predicted 5.3 Difficulty: Easy EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1548 · Abuse Elevation Control Mechanism

Affected Version Matrix 24

VendorProduct Version RangeStatus
Linux Linux 5545496966631cd40ad3aa6450be56d0e5773d10< 51107e768de6821b68aa34a136d07bc7a09cf6c3 affected
73c43bccf25cec9cdec62fc22a513c28a4b28390< e4316bd85e42b01125b2aab691769234a388b8a3 affected
10ece754df9a799131a1cf3197e9d26c04ddec22< 51da899c209a9624e48be416bd30e7ed5cd6c3d8 affected
6f8d6ed3426a17f77628cebfb6a6e2c6f2b2496c< 30405b23b4d5e2a596fb756d48119d7293194e75 affected
93483ac5fec62cc1de166051b219d953bb5e4ef4< 6a59b70fe71ec66c0dd19e2c279c71846a3fb2f0 affected
93483ac5fec62cc1de166051b219d953bb5e4ef4< e31957a819e60cf0bc9a49408765e6095fd3d046 affected
93483ac5fec62cc1de166051b219d953bb5e4ef4< 9d9456185fd5f1891c74354ee297f19538141ead affected
93483ac5fec62cc1de166051b219d953bb5e4ef4< 930b64ca0c511521f0abdd1d57ce52b2a6e3476b affected
… +16 more rows
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I. Basic Information for CVE-2025-22026

Vulnerability Information
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Vulnerability Title
nfsd: don't ignore the return code of svc_proc_register()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: don't ignore the return code of svc_proc_register() Currently, nfsd_proc_stat_init() ignores the return value of svc_proc_register(). If the procfile creation fails, then the kernel will WARN when it tries to remove the entry later. Fix nfsd_proc_stat_init() to return the same type of pointer as svc_proc_register(), and fix up nfsd_net_init() to check that and fail the nfsd_net construction if it occurs. svc_proc_register() can fail if the dentry can't be allocated, or if an identical dentry already exists. The second case is pretty unlikely in the nfsd_net construction codepath, so if this happens, return -ENOMEM.
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nfsd忽略svc_proc_register返回码。
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 5545496966631cd40ad3aa6450be56d0e5773d10 ~ 51107e768de6821b68aa34a136d07bc7a09cf6c3 -
Linux Linux 6.9 -

II. Public POCs for CVE-2025-22026

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III. Intelligence Information for CVE-2025-22026

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Patches & Fixes for CVE-2025-22026 (4)

Other References for CVE-2025-22026 (2)

Same Patch Batch · Linux · 2025-04-16 · 127 CVEs total

CVE-2025-22021 10.0 CRITICAL netfilter: socket: Lookup orig tuple for IPv6 SNAT
CVE-2025-22077 9.8 CRITICAL Revert "smb: client: fix TCP timers deadlock after rmmod"
CVE-2025-22088 9.8 CRITICAL RDMA/erdma: Prevent use-after-free in erdma_accept_newconn()
CVE-2025-22110 9.8 CRITICAL netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error
CVE-2025-22118 8.8 HIGH ice: validate queue quanta parameters to prevent OOB access
CVE-2025-22040 8.8 HIGH ksmbd: fix session use-after-free in multichannel connection
CVE-2025-22041 8.8 HIGH ksmbd: fix use-after-free in ksmbd_sessions_deregister()
CVE-2025-22039 8.8 HIGH ksmbd: fix overflow in dacloffset bounds check
CVE-2025-22086 8.8 HIGH RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow
CVE-2024-58096 8.8 HIGH wifi: ath11k: add srng->lock for ath11k_hal_srng_* in monitor mode
CVE-2025-22074 8.8 HIGH ksmbd: fix r_count dec/increment mismatch
CVE-2025-23133 8.8 HIGH wifi: ath11k: update channel list in reg notifier instead reg worker
CVE-2025-22117 8.7 HIGH ice: fix using untrusted value of pkt_len in ice_vc_fdir_parse_raw()
CVE-2025-22108 8.6 HIGH bnxt_en: Mask the bd_cnt field in the TX BD properly
CVE-2025-22121 8.4 HIGH ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()
CVE-2025-22080 8.4 HIGH fs/ntfs3: Prevent integer overflow in hdr_first_de()
CVE-2025-22038 8.3 HIGH ksmbd: validate zero num_subauth before sub_auth is accessed
CVE-2025-22042 8.1 HIGH ksmbd: add bounds check for create lease context
CVE-2025-22043 8.1 HIGH ksmbd: add bounds check for durable handle context
CVE-2025-22047 7.8 HIGH x86/microcode/AMD: Fix __apply_microcode_amd()'s return value

Showing top 20 of 127 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-22026

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