CVE-2019-20808

In QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.

• CWE-125

• https://bugzilla.redhat.com/show_bug.cgi?id=1841136Issue Tracking, Third Party Advisory
• https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=aab0e2a661b2b6bf7915c0aefe807fb60d6d9d13
• https://security.netapp.com/advisory/ntap-20210205-0003/Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1841136Issue Tracking, Third Party Advisory
• https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=aab0e2a661b2b6bf7915c0aefe807fb60d6d9d13
• https://security.netapp.com/advisory/ntap-20210205-0003/Third Party Advisory

Published

Dec 31, 2020

Last Modified

Jun 17, 2026

Status

Modified

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