diff options
| author | Akihiko Odaki <akihiko.odaki@daynix.com> | 2023-06-01 12:18:59 +0900 |
|---|---|---|
| committer | Jason Wang <jasowang@redhat.com> | 2023-11-21 15:42:34 +0800 |
| commit | 9050f976e447444ea6ee2ba12c9f77e4b0dc54bc (patch) | |
| tree | f538085c9963ed31cb8f84df51d9b18c8b389d25 /include/net | |
| parent | 7d0fefdf81f5973334c344f6b8e1896c309dff66 (diff) | |
| download | qemu-9050f976e447444ea6ee2ba12c9f77e4b0dc54bc.zip qemu-9050f976e447444ea6ee2ba12c9f77e4b0dc54bc.tar.gz qemu-9050f976e447444ea6ee2ba12c9f77e4b0dc54bc.tar.bz2 | |
net: Update MemReentrancyGuard for NIC
Recently MemReentrancyGuard was added to DeviceState to record that the
device is engaging in I/O. The network device backend needs to update it
when delivering a packet to a device.
This implementation follows what bottom half does, but it does not add
a tracepoint for the case that the network device backend started
delivering a packet to a device which is already engaging in I/O. This
is because such reentrancy frequently happens for
qemu_flush_queued_packets() and is insignificant.
Fixes: CVE-2023-3019
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/net.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/net.h b/include/net/net.h index 24deea2..ffbd2c8 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -126,6 +126,7 @@ typedef QTAILQ_HEAD(NetClientStateList, NetClientState) NetClientStateList; typedef struct NICState { NetClientState *ncs; NICConf *conf; + MemReentrancyGuard *reentrancy_guard; void *opaque; bool peer_deleted; } NICState; |