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SUSE:SLE-12-SP1:GA
xen.787
557982bf-x86-traps-loop-in-the-correct-directio...
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File 557982bf-x86-traps-loop-in-the-correct-direction-in-compat_iret.patch of Package xen.787
References: bsc#932996 CVE-2015-4164 XSA-136 # Commit 1f0721377952fc038b48f175d7061ec701359aac # Date 2015-06-11 14:44:47 +0200 # Author Andrew Cooper <andrew.cooper3@citrix.com> # Committer Jan Beulich <jbeulich@suse.com> x86/traps: loop in the correct direction in compat_iret() This is CVE-2015-4164 / XSA-136. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> --- a/xen/arch/x86/x86_64/compat/traps.c +++ b/xen/arch/x86/x86_64/compat/traps.c @@ -119,7 +119,7 @@ unsigned int compat_iret(void) } else if ( ksp > regs->_esp ) { - for (i = 9; i > 0; ++i) + for ( i = 9; i > 0; --i ) { rc |= __get_user(x, (u32 *)regs->rsp + i); rc |= __put_user(x, (u32 *)(unsigned long)ksp + i);
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