Multiple buffer overflows in QEMU before 1.7.2 and 2.x before 2.0.0, allow local users to cause a denial of service (crash) or possibly execute arbitrary code via a large (1) L1 table in the qcow2_snapshot_load_tmp in the QCOW 2 block driver (block/qcow2-snapshot.c) or (2) uncompressed chunk, (3) chunk length, or (4) number of sectors in the DMG block driver (block/dmg.c).
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://rhn.redhat.com/errata/RHSA-2014-0420.html | third party advisory vendor advisory |
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=f0dce23475b5af5da6b17b97c1765271307734b6 | |
| http://rhn.redhat.com/errata/RHSA-2014-0421.html | third party advisory vendor advisory |
| https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg04994.html | third party advisory patch |
| http://www.debian.org/security/2014/dsa-3044 | vendor advisory |
| http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=c165f7758009a4f793c1fc19ebb69cf55313450b | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1078885 | issue tracking third party advisory |
| http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=c05e4667be91b46ab42b5a11babf8e84d476cc6b | |
| http://www.openwall.com/lists/oss-security/2014/03/26/8 | third party advisory mailing list |