In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
tracing: Fix retry exhaustion in simple ring buffer reader swap<\/p>\n
simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
\npost-decrements it only after a failed link replacement. On the final
\nattempt, a successful replacement leaves retry at zero, while a failed
\nreplacement leaves it at -1.<\/p>\n
The current !retry test reverses both outcomes. It returns an error after
\na successful final replacement, leaving the link update complete but the
\nreader bookkeeping unfinished. After a failed final replacement, it
\nfalls through and updates the head and reader pointers as though the
\nreplacement succeeded, which can corrupt the ring.<\/p>\n
Treat only a negative counter as exhaustion and return the documented
\n-EBUSY error.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
tracing: Fix retry exhaustion in simple ring buffer reader swap<\/p>\n
simple_ring_buffer_swap_reader_page() starts with retry set to 8 a<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21670","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21670","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=21670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}