CVE-2025-22026

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5545496966631cd40ad3aa6450be56d0e5773d10 < 51107e768de6821b68aa34a136d07bc7a09cf6c3affected
LinuxLinux73c43bccf25cec9cdec62fc22a513c28a4b28390 < e4316bd85e42b01125b2aab691769234a388b8a3affected
LinuxLinux10ece754df9a799131a1cf3197e9d26c04ddec22 < 51da899c209a9624e48be416bd30e7ed5cd6c3d8affected
LinuxLinux6f8d6ed3426a17f77628cebfb6a6e2c6f2b2496c < 30405b23b4d5e2a596fb756d48119d7293194e75affected
LinuxLinux93483ac5fec62cc1de166051b219d953bb5e4ef4 < 6a59b70fe71ec66c0dd19e2c279c71846a3fb2f0affected
LinuxLinux93483ac5fec62cc1de166051b219d953bb5e4ef4 < e31957a819e60cf0bc9a49408765e6095fd3d046affected
LinuxLinux93483ac5fec62cc1de166051b219d953bb5e4ef4 < 9d9456185fd5f1891c74354ee297f19538141eadaffected
LinuxLinux93483ac5fec62cc1de166051b219d953bb5e4ef4 < 930b64ca0c511521f0abdd1d57ce52b2a6e3476baffected
LinuxLinuxb7b05f98f3f06fea3986b46e5c7fe2928676b02daffected
LinuxLinux5.10.226 < 5.10.259affected
LinuxLinux5.15.166 < 5.15.210affected
LinuxLinux6.1.106 < 6.1.164affected
LinuxLinux6.6.47 < 6.6.125affected
LinuxLinux6.8.10 < 6.9affected
LinuxLinux6.9affected
LinuxLinux0 < 6.9unaffected
LinuxLinux5.10.259 <= 5.10.*unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.164 <= 6.1.*unaffected
LinuxLinux6.6.125 <= 6.6.*unaffected
LinuxLinux6.12.24 <= 6.12.*unaffected
LinuxLinux6.13.12 <= 6.13.*unaffected
LinuxLinux6.14.2 <= 6.14.*unaffected
LinuxLinux6.15 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References