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| author | Matthew Daley <mattjd@gmail.com> | 2013-10-10 15:22:55 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-10-10 15:22:55 +0200 |
| commit | 889f547790953d30cd88a465aac5954e5f407e53 (patch) | |
| tree | 3c7ae574ee5c5f32126451b48b41729e6ee8e822 /tools/blktap2/drivers/hashtable_utility.c | |
| parent | b267a5a2cae14c97ab9198336f1529e7e48fad22 (diff) | |
| download | xen-889f547790953d30cd88a465aac5954e5f407e53.tar.gz xen-889f547790953d30cd88a465aac5954e5f407e53.tar.bz2 xen-889f547790953d30cd88a465aac5954e5f407e53.zip | |
x86: check segment descriptor read result in 64-bit OUTS emulation
When emulating such an operation from a 64-bit context (CS has long
mode set), and the data segment is overridden to FS/GS, the result of
reading the overridden segment's descriptor (read_descriptor) is not
checked. If it fails, data_base is left uninitialized.
This can lead to 8 bytes of Xen's stack being leaked to the guest
(implicitly, i.e. via the address given in a #PF).
Coverity-ID: 1055116
This is CVE-2013-4368 / XSA-67.
Signed-off-by: Matthew Daley <mattjd@gmail.com>
Fix formatting.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
master commit: 0771faba163769089c9f05f7f76b63e397677613
master date: 2013-10-10 15:19:53 +0200
Diffstat (limited to 'tools/blktap2/drivers/hashtable_utility.c')
0 files changed, 0 insertions, 0 deletions