In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
coresight: perf: Retrieve path and source from event data<\/p>\n
ETM perf callbacks currently use the per-CPU csdev_src pointer, which
\ncan race with updates during device registration and unregistration.<\/p>\n
The AUX setup already builds and stores the path in the event data.
\nUse this path to retrieve the source instead of csdev_src to avoid
\nthe race.<\/p>\n
Export coresight_get_source() and add etm_event_get_ctxt_path() to
\nretrieve the context’s path and its source with READ_ONCE() \/
\nWRITE_ONCE() accessors. Give the comments to explain why this
\napproach is safe when pause or resume callbacks preempt the disable
\ncallback (e.g. via NMI).<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
coresight: perf: Retrieve path and source from event data<\/p>\n
ETM perf callbacks currently use the per-CPU csdev_src pointer, which
\nca<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-28731","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/28731","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}