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qcow2: Avoid integer overflow in get_refcount (CVE-2014-0143)
authorKevin Wolf <kwolf@redhat.com>
Wed, 26 Mar 2014 12:05:49 +0000 (13:05 +0100)
committerMichael Roth <mdroth@linux.vnet.ibm.com>
Thu, 3 Jul 2014 21:18:12 +0000 (16:18 -0500)
commit7a6088c87030b84e9f4b70ed9b656bec999dfc77
treeedb3a01853d240d8063b4436a66b33806a459a3etree
parentffa3ab02174f7cb474366bc325bd35264364c9fdcommit | diff
qcow2: Avoid integer overflow in get_refcount (CVE-2014-0143)

This ensures that the checks catch all invalid cluster indexes
instead of returning the refcount of a wrong cluster.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit db8a31d11d6a60f48d6817530640d75aa72a9a2f)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
block/qcow2-refcount.c diff | blob | blame | history
Mirror of https://git.qemu.org/git/qemu.git