| commit | b4295bff25f7b50de1d9cc94a9c6effd40056bca | |
| author | Philippe Mathieu-Daudé <philmd@linaro.org> | |
| Thu, 4 Apr 2024 18:56:35 +0000 (4 20:56 +0200) | ||
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | |
| Wed, 10 Apr 2024 07:09:33 +0000 (10 09:09 +0200) | ||
| tree | 836809e8e680772dcf9137395039f170a09f09d9 | treesnapshot (tar.gz zip) |
| parent | ba28e0ff4d95b56dc334aac2730ab3651ffc3132 | commitdiff |
hw/char/virtio-serial-bus: Protect from DMA re-entrancy bugs
Replace qemu_bh_new_guarded() by virtio_bh_new_guarded()
so the bus and device use the same guard. Otherwise the
DMA-reentrancy protection can be bypassed.
Fixes: CVE-2024-3446
Cc: qemu-stable@nongnu.org
Suggested-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20240409105537.18308-4-philmd@linaro.org>
Replace qemu_bh_new_guarded() by virtio_bh_new_guarded()
so the bus and device use the same guard. Otherwise the
DMA-reentrancy protection can be bypassed.
Fixes: CVE-2024-3446
Cc: qemu-stable@nongnu.org
Suggested-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20240409105537.18308-4-philmd@linaro.org>
| hw/char/virtio-serial-bus.c | diffblobblamehistory |