In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
blk-mq: set RQF_USE_SCHED when the operation is known<\/p>\n
The cached requests are allocated for one operation but can be handed
\nout for another. A passthrough command has RQF_USE_SCHED cleared, so
\nusing those flags for a subsequent read\/write bio will insert it into
\nthe scheduler without ->prepare_request() and frees it without
\n->finish_request(). For kyber, this leaks the domain token acquired at
\ndispatch and stalls the queue.<\/p>\n
Don’t set RQF_USE_SCHED based on the first operation the batch happened
\nto be allocated for. Instead, set it after the request is claimed by an
\noperation. Introduce a helper function, blk_mq_rq_late_init() for this,
\nand absorb blk_mq_rq_time_init() since the two run together.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
blk-mq: set RQF_USE_SCHED when the operation is known<\/p>\n
The cached requests are allocated for one operation but can be handed
\nout fo<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41292","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41292","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=41292"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41292"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}