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| author | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-04-04 20:56:35 +0200 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-04-10 09:09:33 +0200 |
| commit | b4295bff25f7b50de1d9cc94a9c6effd40056bca (patch) | |
| tree | 836809e8e680772dcf9137395039f170a09f09d9 /chardev/char-fd.c | |
| parent | ba28e0ff4d95b56dc334aac2730ab3651ffc3132 (diff) | |
| download | qemu-b4295bff25f7b50de1d9cc94a9c6effd40056bca.zip qemu-b4295bff25f7b50de1d9cc94a9c6effd40056bca.tar.gz qemu-b4295bff25f7b50de1d9cc94a9c6effd40056bca.tar.bz2 | |
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>
Diffstat (limited to 'chardev/char-fd.c')
0 files changed, 0 insertions, 0 deletions