In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: mt76: mt7915: clear wcid mask under mutex after RCU pointer clear<\/p>\n
mt7915_remove_interface() cleared the wcid mask bit with no lock held and
\nbefore clearing the RCU wcid pointer. The mask is a non-atomic RMW shared
\nwith the allocators, which all run under dev->mt76.mutex; on DBDC the two
\nwiphys share one mt76_dev, so this raced add_interface\/sta_add on the
\nother band and could leak or double-hand-out a wcid. Clearing the bit
\nbefore the RCU pointer also let a concurrent allocation reuse the index
\nand publish its wcid, which the subsequent NULL assignment then wiped.
\nMove the clear into the existing mutex section, after the RCU pointer is
\ncleared.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: mt76: mt7915: clear wcid mask under mutex after RCU pointer clear<\/p>\n
mt7915_remove_interface() cleared the wcid mask bit with n<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25782","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25782","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=25782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}