CVE-2026-29642

Katalog CVE

CVSS 7.8 · High EPSS 0,15%

Kerentanan Internal Asset Exposed to Unsafe Debug Access Level or State. Skor CVSS 3.1 7.8 (High) menurut CISA ADP.

Deskripsi (NVD)

A local attacker who can execute privileged CSR operations (or can induce firmware to do so) performs carefully crafted reads/writes to menvcfg (e.g., csrrs in M-mode). On affected XiangShan versions (commit aecf601e803bfd2371667a3fb60bfcd83c333027, 2024-11-19), these menvcfg accesses can unexpectedly set WPRI (reserved) bits in the status view (xstatus) to 1. RISC-V defines WPRI fields as "writes preserve values, reads ignore values," i.e., they must not be modified by software manipulating other fields, and menvcfg itself contains multiple WPRI fields.

Rincian

Terbit di NVD

20 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Awaiting Analysis

CVSS 3.1

7.8 (High), sumber CISA ADP
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-1244: Internal Asset Exposed to Unsafe Debug Access Level or State

EPSS (30 hari)

0,15% peluang dieksploitasi; lebih tinggi dari 3,6% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://docs.riscv.org/reference/isa/priv/machine.html
• https://docs.riscv.org/reference/isa/priv/priv-csrs.html
• https://github.com/OpenXiangShan/XiangShan/commit/5e3dd63
• https://github.com/OpenXiangShan/XiangShan/issues/3934