Integer overflow in hw/virtio/virtio-crypto.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code on the host via a crafted virtio-crypto request, which triggers a heap-based buffer overflow.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://lists.nongnu.org/archive/html/qemu-devel/2017-01/msg01368.html | mailing list patch vendor advisory |
| http://www.securityfocus.com/bid/96141 | vdb entry third party advisory |
| https://security.gentoo.org/glsa/201702-28 | third party advisory vendor advisory |
| http://git.qemu-project.org/?p=qemu.git%3Ba=commit%3Bh=a08aaff811fb194950f79711d2afe5a892ae03a4 | |
| http://www.openwall.com/lists/oss-security/2017/02/08/2 | mailing list third party advisory patch |
| https://bugzilla.redhat.com/show_bug.cgi?id=1420092 | issue tracking third party advisory patch |