Description

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html

https://bugzilla.redhat.com/show_bug.cgi?id=1869201

https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/JTZQUQ6ZBPMFMNAUQBVJFELYNMUZLL6P/

https://lists.fedoraproject.org/archives/list/[email protected]/message/M52WIRMZL6TZRYZ65N6OAYNNFHV62O2N/

https://security.gentoo.org/glsa/202009-14

https://security.gentoo.org/glsa/202011-09

https://security.netapp.com/advisory/ntap-20200924-0006/

https://usn.ubuntu.com/4511-1/

https://www.debian.org/security/2020/dsa-4760

https://www.openwall.com/lists/oss-security/2020/08/24/2

https://www.openwall.com/lists/oss-security/2020/08/24/3

Details

Risk Information

CVSS v2

CVSS v3