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authorGerd Hoffmann <kraxel@redhat.com>2017-02-08 11:18:36 +0100
committerGerd Hoffmann <kraxel@redhat.com>2017-02-24 14:35:50 +0100
commit92f2b88cea48c6aeba8de568a45f2ed958f3c298 (patch)
tree6ed759495bfcf73c74481e0d8cc01c7d33cc8d21 /hw/net/virtio-net.c
parent10f25e4844cb9b3f02fb032f88051dd5b65b4206 (diff)
downloadfocaccia-qemu-92f2b88cea48c6aeba8de568a45f2ed958f3c298.tar.gz
focaccia-qemu-92f2b88cea48c6aeba8de568a45f2ed958f3c298.zip
cirrus: add blit_is_unsafe call to cirrus_bitblt_cputovideo (CVE-2017-2620)
CIRRUS_BLTMODE_MEMSYSSRC blits do NOT check blit destination
and blit width, at all.  Oops.  Fix it.

Security impact: high.

The missing blit destination check allows to write to host memory.
Basically same as CVE-2014-8106 for the other blit variants.

Cc: qemu-stable@nongnu.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/net/virtio-net.c')
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