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/openbmc/qemu/tests/qemu-iotests/
H A D080.out11b128f4 Wed Mar 26 07:06:04 CDT 2014 Kevin Wolf <kwolf@redhat.com> qcow2: Fix NULL dereference in qcow2_open() error path (CVE-2014-0146)

The qcow2 code assumes that s->snapshots is non-NULL if s->nb_snapshots
!= 0. By having the initialisation of both fields separated in
qcow2_open(), any error occuring in between would cause the error path
to dereference NULL in qcow2_free_snapshots() if the image had any
snapshots.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
H A D08011b128f4 Wed Mar 26 07:06:04 CDT 2014 Kevin Wolf <kwolf@redhat.com> qcow2: Fix NULL dereference in qcow2_open() error path (CVE-2014-0146)

The qcow2 code assumes that s->snapshots is non-NULL if s->nb_snapshots
!= 0. By having the initialisation of both fields separated in
qcow2_open(), any error occuring in between would cause the error path
to dereference NULL in qcow2_free_snapshots() if the image had any
snapshots.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
/openbmc/qemu/block/
H A Dqcow2.c11b128f4 Wed Mar 26 07:06:04 CDT 2014 Kevin Wolf <kwolf@redhat.com> qcow2: Fix NULL dereference in qcow2_open() error path (CVE-2014-0146)

The qcow2 code assumes that s->snapshots is non-NULL if s->nb_snapshots
!= 0. By having the initialisation of both fields separated in
qcow2_open(), any error occuring in between would cause the error path
to dereference NULL in qcow2_free_snapshots() if the image had any
snapshots.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>