https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 06 Oct 2026 19:26:09 +0000 https://cve.radiocsirt.org/vuln/cve-2022-48713 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>perf/x86/intel/pt: Fix crash with stop filters in single-range mode</p> <p>Add a check for !buf-&gt;single before calling pt_buffer_region_size in a place where a missing check can cause a kernel crash.</p> <p>Fixes a bug introduced by commit 670638477aed (&#34;perf/x86/intel/pt: Opportunistically use single range output mode&#34;), which added a support for PT single-range output mode. Since that commit if a PT stop filter range is hit while tracing, the kernel will crash because of a null pointer dereference in pt_handle_status due to calling pt_buffer_region_size without a ToPA configured.</p> <p>The commit which introduced single-range mode guarded almost all uses of the ToPA buffer variables with checks of the buf-&gt;single variable, but missed the case where tracing was stopped by the PT hardware, which happens when execution hits a configured stop filter.</p> <p>Tested that hitting a stop filter while PT recording successfully records a trace with this patch but crashes without this patch.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>perf/x86/intel/pt: Fix crash with stop filters in single-range mode</p> <p>Add a check for !buf-&gt;single before calling pt_buffer_region_size in a place where a missing check can cause a kernel crash.</p> <p>Fixes a bug introduced by commit 670638477aed (&#34;perf/x86/intel/pt: Opportunistically use single range output mode&#34;), which added a support for PT single-range output mode. Since that commit if a PT stop filter range is hit while tracing, the kernel will crash because of a null pointer dereference in pt_handle_status due to calling pt_buffer_region_size without a ToPA configured.</p> <p>The commit which introduced single-range mode guarded almost all uses of the ToPA buffer variables with checks of the buf-&gt;single variable, but missed the case where tracing was stopped by the PT hardware, which happens when execution hits a configured stop filter.</p> <p>Tested that hitting a stop filter while PT recording successfully records a trace with this patch but crashes without this patch.</p> https://cve.radiocsirt.org/vuln/cve-2022-48713