In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dlm: fix add msg handle in send_queue ordered<\/p>\n
In a benchmark scenario triggering a lot of requests that triggers a lot
\nof DLM messages on the network it can be that the mh->seq is not ordered
\naccording the oldest seq number. This ordering is required by
\ndlm_receive_ack as “before(mh->seq, seq)” will stop to check for older
\nsequence numbers that are ordered in the tail of “node->send_queue”.<\/p>\n
The side effects of not having it correct ordered regarding
\n“before(mh->seq, seq)” are refcounting issues and use-after free.<\/p>\n
I only was able to reproduce this issue in a experimental DLM branch
\nand a user space DLM benchmark that uses io_uring. After changing this I
\ndon’t experienced any refcounting with the sending buffer issues anymore.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dlm: fix add msg handle in send_queue ordered<\/p>\n
In a benchmark scenario triggering a lot of requests that triggers a lot
\nof DLM mess<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7354","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7354","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=7354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}