CVE-2021-20255

Katalog CVE

CVSS 5.5 · Medium EPSS 0,41%

Kerentanan Loop with Unreachable Exit Condition ('Infinite Loop') pada qemu, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Rincian

Terbit di NVD

9 Maret 2021

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

Jenis kelemahan (CWE)

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CWE-674: Uncontrolled Recursion

EPSS (30 hari)

0,41% peluang dieksploitasi; lebih tinggi dari 33,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=1930646 issue tracking · patch · advisory pihak ketiga
• https://www.openwall.com/lists/oss-security/2021/02/25/1 mailing list · patch · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html mailing list · advisory pihak ketiga
• https://ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwE?path=%2Feepro100_stackoverflow1 advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210507-0003/ advisory pihak ketiga