CVE-2026-64082

Katalog CVE

CVSS 7.8 · High EPSS 0,13%

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

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compat_riscv_gpr_set() calls cregs_to_regs() unconditionally, even when user_regset_copyin() fails. Since cregs is an uninitialized stack variable, a copyin failure causes uninitialized stack data to be written into the target task's pt_regs, corrupting its register state and potentially leaking kernel stack contents. compat_restore_sigcontext() has the same issue: it calls cregs_to_regs() even when __copy_from_user() fails, leading to the same corruption of the signal-returning task's register state on error. Only call cregs_to_regs() when the user copy succeeds.

Rincian

Terbit di NVD

19 Juli 2026

Terakhir diubah

3 September 2026

Status NVD

Analyzed

CVSS 3.1

7.8 (High), sumber CNA
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)

0,13% peluang dieksploitasi; lebih tinggi dari 2,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0599aa23734c48de9bce36d043a9ec90c23945a1 patch
• https://git.kernel.org/stable/c/2a7d1daf2674fe7d5b1cc99a4e3b5f0f72d5958f patch
• https://git.kernel.org/stable/c/66dedb6028c3df6c6a3372dd935b823917e150d5 patch
• https://git.kernel.org/stable/c/6ebcbb53fc9bc30843054ed99fd60b8e542628f4 patch
• https://git.kernel.org/stable/c/9e020156833f1ad0d425a1e3d85b65639f1c1c50 patch
• https://git.kernel.org/stable/c/f2d88b0d7aebfa4643fc58bbae57210c6daff9c6 patch