CVE-2021-3638

Description

An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

References

https://ubuntu.com/security/CVE-2021-3638

https://security.netapp.com/advisory/ntap-20220407-0003/

https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/

https://bugzilla.redhat.com/show_bug.cgi?id=1979858

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3