CVE-2025-39716

Katalog CVE

CVSS 5.5 · Medium EPSS 0,15%

Kerentanan pada linux kernel, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: parisc: Revise __get_user() to probe user read access Because of the way read access support is implemented, read access interruptions are only triggered at privilege levels 2 and 3. The kernel executes at privilege level 0, so __get_user() never triggers a read access interruption (code 26). Thus, it is currently possible for user code to access a read protected address via a system call. Fix this by probing read access rights at privilege level 3 (PRIV_USER) and setting __gu_err to -EFAULT (-14) if access isn't allowed. Note the cmpiclr instruction does a 32-bit compare because COND macro doesn't work inside asm.

Rincian

Terbit di NVD

5 September 2025

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

EPSS (30 hari)

0,15% peluang dieksploitasi; lebih tinggi dari 3,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/28a9b71671fb4a2993ef85b8ef6f117ea63894fe patch
• https://git.kernel.org/stable/c/4c981077255acc2ed5b3df6e8dd0125c81b626a9 patch
• https://git.kernel.org/stable/c/741b163e440683195b8fd4fc8495fcd0105c6ab7 patch
• https://git.kernel.org/stable/c/89f686a0fb6e473a876a9a60a13aec67a62b9a7e patch
• https://git.kernel.org/stable/c/f410ef9a032caf98117256b22139c31342d7bb06 patch
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html advisory pihak ketiga
• https://cert-portal.siemens.com/productcert/html/ssa-032379.html