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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2025-0913

Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall

Description

os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Go standard library syscall

Default version status: unaffected

  • 0 to < 1.23.10affected
  • 1.24.0-0 to < 1.24.4affected

Go standard library os

Default version status: unaffected

  • 0 to < 1.23.10affected
  • 1.24.0-0 to < 1.24.4affected

References