Description

The address_space_write_continue function in exec.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by leveraging use of qemu_map_ram_ptr to access guest ram block area.

References

http://www.debian.org/security/2017/dsa-3925

http://www.openwall.com/lists/oss-security/2017/07/17/4

http://www.securityfocus.com/bid/99895

https://access.redhat.com/errata/RHSA-2017:3369

https://access.redhat.com/errata/RHSA-2017:3466

https://access.redhat.com/errata/RHSA-2017:3470

https://access.redhat.com/errata/RHSA-2017:3471

https://access.redhat.com/errata/RHSA-2017:3472

https://access.redhat.com/errata/RHSA-2017:3473

https://access.redhat.com/errata/RHSA-2017:3474

https://bugzilla.redhat.com/show_bug.cgi?id=1471638

https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg03775.html

https://usn.ubuntu.com/3575-1/

Details

Risk Information

CVSS v2

CVSS v3