CVE-2025-23165

About vulnerability

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 product:

AlmaLinux 9.2 ESU , Alpine Linux 3.22 , Alpine Linux 3.23 , Debian 10 , Debian 11 , Debian 12 , Debian 13 , EL 10 , EL 7 , EL 8 , EL 9 , TuxCare 9.6 ESU , Ubuntu 18.04 , Ubuntu 20.04 , Ubuntu 22.04 , Ubuntu 24.04

Affected packages:

nodejs @ 12 (+76 more)

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.