CVE-2025-38579

Katalog CVE

CVSS 7.8 · High EPSS 0,17%

Kerentanan Use of Uninitialized Resource pada linux kernel, debian linux. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix KMSAN uninit-value in extent_info usage KMSAN reported a use of uninitialized value in `__is_extent_mergeable()` and `__is_back_mergeable()` via the read extent tree path. The root cause is that `get_read_extent_info()` only initializes three fields (`fofs`, `blk`, `len`) of `struct extent_info`, leaving the remaining fields uninitialized. This leads to undefined behavior when those fields are accessed later, especially during extent merging. Fix it by zero-initializing the `extent_info` struct before population.

Rincian

Terbit di NVD

19 Agustus 2025

Terakhir diubah

30 Juli 2026

Status NVD

Modified

CVSS 3.1

7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-908: Use of Uninitialized Resource

EPSS (30 hari)

0,17% peluang dieksploitasi; lebih tinggi dari 5,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/01b6f5955e0008af6bc3a181310d2744bb349800 patch
• https://git.kernel.org/stable/c/08e8ab00a6d20d5544c932ee85a297d833895141 patch
• https://git.kernel.org/stable/c/154467f4ad033473e5c903a03e7b9bca7df9a0fa patch
• https://git.kernel.org/stable/c/44a79437309e0ee2276ac17aaedc71253af253a8 patch
• https://git.kernel.org/stable/c/cc1615d5aba4f396cf412579928539a2b124c8a0 patch
• https://git.kernel.org/stable/c/dabfa3952c8e6bfe6414dbf32e8b6c5f349dc898 patch
• https://git.kernel.org/stable/c/e68b751ec2b15d866967812c57cfdfc1eba6a269 patch
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html mailing list · advisory pihak ketiga