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Fix CVE-2008-0928 - insufficient block device address range checking

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Qemu 0.9.1 and earlier does not perform range checks for block device
read or write requests, which allows guest host users with root
privileges to access arbitrary memory and escape the virtual machine.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4037 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-03-11 17:17:59 +00:00
parent b94ed5772e
commit 902b27d0b8
6 changed files with 79 additions and 3 deletions
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1
block_int.h
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@ -97,6 +97,7 @@ struct BlockDriverState {
int locked; /* if true, the media cannot temporarily be ejected */
int encrypted; /* if true, the media is encrypted */
int sg; /* if true, the device is a /dev/sg* */
int autogrow; /* if true, the backing store can auto-extend to allocate new extents */
/* event callback when inserting/removing */
void (*change_cb)(void *opaque);
void *change_opaque;