In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
nvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request<\/p>\n
__nvme_fc_init_request() maps cmd_iu and then rsp_iu for DMA. If the
\nrsp_iu mapping fails, the original code only recorded the error and fell
\nthrough: it left the already-mapped cmd_iu unmapped and still marked the
\nop as FCPOP_STATE_IDLE before returning. Since blk-mq does not call
\n.exit_request() when .init_request() fails, the cmd_iu mapping is leaked
\nfor every op whose rsp_iu mapping fails.<\/p>\n
Jump to an error path on rsp_iu mapping failure that unmaps cmd_iu and
\nreturns the error without marking the op idle, so it stays in the
\nFCPOP_STATE_UNINIT state set by the initial memset().<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
nvme-fc: unmap cmd_iu DMA on rsp_iu mapping failure in init_request<\/p>\n
__nvme_fc_init_request() maps cmd_iu and then rsp_iu for DMA. <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25820","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25820","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=25820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}