CVE-2025-23165

Summary

In Node.js, the ReadFileUtf8 internal binding leaks memory due to a corrupted pointer in uv_fs_s.file: a UTF-16 path buffer is allocated but subsequently overwritten when the file descriptor is set. This results in an unrecoverable memory leak on every call. Repeated use can cause unbounded memory growth, leading to a denial of service.

Impact:

  • This vulnerability affects APIs relying on ReadFileUtf8 on Node.js release lines: v20 and v22.

Affected Software

VendorProductVersion RangeStatus
nodejsnode4.0 < 4.*affected
nodejsnode5.0 < 5.*affected
nodejsnode6.0 < 6.*affected
nodejsnode7.0 < 7.*affected
nodejsnode8.0 < 8.*affected
nodejsnode9.0 < 9.*affected
nodejsnode10.0 < 10.*affected
nodejsnode11.0 < 11.*affected
nodejsnode12.0 < 12.*affected
nodejsnode13.0 < 13.*affected
nodejsnode14.0 < 14.*affected
nodejsnode15.0 < 15.*affected
nodejsnode16.0 < 16.*affected
nodejsnode17.0 < 17.*affected
nodejsnode18.0 < 18.*affected
nodejsnode19.0 < 19.*affected
nodejsnode20.0 <= 20.19.1affected
nodejsnode22.0 <= 22.15.0affected
nodejsnode21.0 < 21.*affected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

References