CVE-2023-53073

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> perf/x86/amd/core: Always clear status for idx<br /> <br /> The variable &amp;#39;status&amp;#39; (which contains the unhandled overflow bits) is<br /> not being properly masked in some cases, displaying the following<br /> warning:<br /> <br /> WARNING: CPU: 156 PID: 475601 at arch/x86/events/amd/core.c:972 amd_pmu_v2_handle_irq+0x216/0x270<br /> <br /> This seems to be happening because the loop is being continued before<br /> the status bit being unset, in case x86_perf_event_set_period()<br /> returns 0. This is also causing an inconsistency because the "handled"<br /> counter is incremented, but the status bit is not cleaned.<br /> <br /> Move the bit cleaning together above, together when the "handled"<br /> counter is incremented.