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| author | Jan Beulich <jbeulich@suse.com> | 2013-09-30 14:24:25 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-09-30 14:24:25 +0200 |
| commit | ec8cda7355419ef4131bafb77212bd983322dacb (patch) | |
| tree | 981ad51c87e6b57bfc768909ad38837ef23e2616 | |
| parent | 0155524aa6bf4ea4947c865dee4b13dd3dec6427 (diff) | |
| download | xen-ec8cda7355419ef4131bafb77212bd983322dacb.tar.gz xen-ec8cda7355419ef4131bafb77212bd983322dacb.tar.bz2 xen-ec8cda7355419ef4131bafb77212bd983322dacb.zip | |
x86: properly set up fbld emulation operand address
This is CVE-2013-4361 / XSA-66.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
master commit: 28b706efb6abb637fabfd74cde70a50935a5640b
master date: 2013-09-30 14:18:58 +0200
| -rw-r--r-- | xen/arch/x86/x86_emulate/x86_emulate.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/xen/arch/x86/x86_emulate/x86_emulate.c b/xen/arch/x86/x86_emulate/x86_emulate.c index 8794b8219f..e390c2a6ce 100644 --- a/xen/arch/x86/x86_emulate/x86_emulate.c +++ b/xen/arch/x86/x86_emulate/x86_emulate.c @@ -3156,11 +3156,11 @@ x86_emulate( break; case 4: /* fbld m80dec */ ea.bytes = 10; - dst = ea; + src = ea; if ( (rc = ops->read(src.mem.seg, src.mem.off, &src.val, src.bytes, ctxt)) != 0 ) goto done; - emulate_fpu_insn_memdst("fbld", src.val); + emulate_fpu_insn_memsrc("fbld", src.val); break; case 5: /* fild m64i */ ea.bytes = 8; |