CVE-2025-39870

Katalog CVE

CVSS 7.8 · High EPSS 0,16%

Kerentanan Double Free 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: dmaengine: idxd: Fix double free in idxd_setup_wqs() The clean up in idxd_setup_wqs() has had a couple bugs because the error handling is a bit subtle. It's simpler to just re-write it in a cleaner way. The issues here are: 1) If "idxd->max_wqs" is <= 0 then we call put_device(conf_dev) when "conf_dev" hasn't been initialized. 2) If kzalloc_node() fails then again "conf_dev" is invalid. It's either uninitialized or it points to the "conf_dev" from the previous iteration so it leads to a double free. It's better to free partial loop iterations within the loop and then the unwinding at the end can handle whole loop iterations. I also renamed the labels to describe what the goto does and not where the goto was located.

Rincian

Terbit di NVD

23 September 2025

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

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-415: Double Free

EPSS (30 hari)

0,16% peluang dieksploitasi; lebih tinggi dari 4,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/25e6146c2812487a88f619d5ff6efbdcd5b2bc31 patch
• https://git.kernel.org/stable/c/39aaa337449e71a41d4813be0226a722827ba606 patch
• https://git.kernel.org/stable/c/9f0e225635475b2285b966271d5e82cba74295b1 patch
• https://git.kernel.org/stable/c/df82c7901513fd0fc738052a8e6a330d92cc8ec9 patch
• https://git.kernel.org/stable/c/ec5430d090d0b6ace8fefa290fc37e88930017d2 patch
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html mailing list · advisory pihak ketiga