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| author | Michael S. Tsirkin <mst@redhat.com> | 2015-09-10 16:41:17 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-10-01 16:16:52 +0300 |
| commit | 8561c9244ddf1122dfe7ccac9b23f506062f1499 (patch) | |
| tree | 80ad18ab7472e7cdc9bab615093c29cd92067cdb /hw/i386 | |
| parent | 9fac18f03a9040b67ec38e14d3e1ed34db9c7e06 (diff) | |
| download | qemu-8561c9244ddf1122dfe7ccac9b23f506062f1499.zip qemu-8561c9244ddf1122dfe7ccac9b23f506062f1499.tar.gz qemu-8561c9244ddf1122dfe7ccac9b23f506062f1499.tar.bz2 | |
exec: allocate PROT_NONE pages on top of RAM
This inserts a read and write protected page between RAM and QEMU
memory, for file-backend RAM.
This makes it harder to exploit QEMU bugs resulting from buffer
overflows in devices using variants of cpu_physical_memory_map,
dma_memory_map etc.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/i386')
0 files changed, 0 insertions, 0 deletions