CVE-2021-3545

6.5 mediumEPSS 0.4%

Medium (6.5). EPSS 0.4% chance of exploitation in the next 30 days.

An information disclosure vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. The flaw exists in virgl_cmd_get_capset_info() in contrib/vhost-user-gpu/virgl.c and could occur due to the read of uninitialized memory. A malicious guest could exploit this issue to leak memory from the host.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
CWE: CWE-908
Published: 2021-06-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

debian:debian_linux
qemu:qemu

References

http://www.openwall.com/lists/oss-security/2021/05/31/1
https://bugzilla.redhat.com/show_bug.cgi?id=1958955
https://security.gentoo.org/glsa/202208-27
https://security.netapp.com/advisory/ntap-20210720-0008/
https://www.debian.org/security/2021/dsa-4980

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