In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
mmc: via-sdmmc: cancel card-detect work on remove<\/p>\n
Disabling the device interrupt and freeing the IRQ prevents new card-detect
\nwork from being queued, but carddet_work already queued by the handler can
\nstill run after via_sd_remove() returns. via_sdc_card_detect() recovers the
\nhost through container_of() and dereferences its MMIO base; once remove()
\nreturns the host can be freed, so that work would touch freed memory.<\/p>\n
Cancel carddet_work after freeing the IRQ and before cancelling
\nfinish_bh_work, which the card-detect handler can also queue. carddet_work
\ncan re-enable the interrupt through via_reset_pcictrl(); mask it again
\nafterwards.<\/p>\n
This issue was found by an in-house static analysis tool and confirmed by
\nmanual code review.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
mmc: via-sdmmc: cancel card-detect work on remove<\/p>\n
Disabling the device interrupt and freeing the IRQ prevents new card-detect
\nwork<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21363","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21363","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=21363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}