CVE-2025-23165: 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…

low3.7CVSS 3.0

AVNACHPRNUINSUCNINAL

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

23 ranges

Vendor	Product	Version range	Fixed in
debian	nodejs	< nodejs 20.19.2+dfsg-1 (forky)	nodejs 20.19.2+dfsg-1 (forky)
nodejs	node	>= 10.0 < 10.*	10.*
nodejs	node	>= 11.0 < 11.*	11.*
nodejs	node	>= 12.0 < 12.*	12.*
nodejs	node	>= 13.0 < 13.*	13.*
nodejs	node	>= 14.0 < 14.*	14.*
nodejs	node	>= 15.0 < 15.*	15.*
nodejs	node	>= 16.0 < 16.*	16.*
nodejs	node	>= 17.0 < 17.*	17.*
nodejs	node	>= 18.0 < 18.*	18.*
nodejs	node	>= 19.0 < 19.*	19.*
nodejs	node	20.0 – 20.19.1	—
nodejs	node	>= 21.0 < 21.*	21.*
nodejs	node	22.0 – 22.15.0	—
nodejs	node	>= 4.0 < 4.*	4.*
nodejs	node	>= 5.0 < 5.*	5.*
nodejs	node	>= 6.0 < 6.*	6.*
nodejs	node	>= 7.0 < 7.*	7.*
nodejs	node	>= 8.0 < 8.*	8.*
nodejs	node	>= 9.0 < 9.*	9.*
nodejs	nodejs	>= 0 < 22.15.1-r0	22.15.1-r0
nodejs	nodejs	>= 0 < 20.19.2+dfsg-1	20.19.2+dfsg-1
nodejs	nodejs	>= 0 < 20.19.2+dfsg-1	20.19.2+dfsg-1

CVSS provenance

nvdv3.03.7LOWCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

osv3.7LOW