CVE-2021-3682

Katalog CVE

CVSS 8.5 · High EPSS 2,9%

Kerentanan Release of Invalid Pointer or Reference pada qemu, redhat enterprise linux +1 lainnya. Skor CVSS 3.1 8.5 (High) menurut NVD.

Deskripsi (NVD)

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.

Rincian

Terbit di NVD

5 Agustus 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-763: Release of Invalid Pointer or Reference

EPSS (30 hari)

2,9% peluang dieksploitasi; lebih tinggi dari 86,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.redhat.com/show_bug.cgi?id=1989651 issue tracking · patch · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html mailing list · advisory pihak ketiga
• https://security.gentoo.org/glsa/202208-27 advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210902-0006/ advisory pihak ketiga
• https://www.debian.org/security/2021/dsa-4980 advisory pihak ketiga