In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ring-buffer: Stop remote reader update when page swap fails<\/p>\n
The remote swap_reader_page callback can return -EBUSY when the writer
\nmoves the head before the remote catches it, particularly during an event
\nstorm on a small buffer. __rb_get_reader_page_from_remote() currently
\nwarns about that failure but continues with the unchanged reader ID and
\nrearranges the local page list as though the swap succeeded.<\/p>\n
Handle the callback failure as a recoverable error. Report it with
\npr_warn_ratelimited() and return NULL. Callers already handle a NULL reader
\npage as a failed attempt. This avoids splicing the same page as both the
\nprevious and new reader without flooding the log under contention.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ring-buffer: Stop remote reader update when page swap fails<\/p>\n
The remote swap_reader_page callback can return -EBUSY when the writer<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21421","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21421","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=21421"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21421"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}