In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
fuse: publish io-uring queues with release semantics<\/p>\n
fuse_uring_create_queue() initializes a fuse_ring_queue and then
\npublishes the pointer into ring->queues[qid] with WRITE_ONCE() under the
\nfch->lock. There are several readers that may concurrently be fetching
\nthat pointer locklessly and then deferencing it.<\/p>\n
WRITE_ONCE() doesn’t ensure ordering of the queue’s field
\ninitialization before the ring->queues[qid] pointer assignment. The
\nqueue must be published with smp_store_release() so the field
\ninitialization is guaranteed to happen before.<\/p>\n
Readers in paths where the read may happen concurrently with the store
\nneed to use READ_ONCE() because any race involving a plain access is
\nundefined.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
fuse: publish io-uring queues with release semantics<\/p>\n
fuse_uring_create_queue() initializes a fuse_ring_queue and then
\npublishes th<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17362","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17362","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=17362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}