In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: rt2x00: avoid full teardown before work setup in probe<\/p>\n
rt2x00lib_probe_dev() uses the full rt2x00lib_remove_dev() teardown for
\nall probe failures. However, drv_data allocation and workqueue allocation
\ncan fail before intf_work, autowakeup_work and sleep_work have been
\ninitialized.<\/p>\n
Do not enter the full remove path until the probe has reached the point
\nwhere those work items are set up. Return directly for drv_data allocation
\nfailure, and use a small early cleanup path for workqueue allocation
\nfailure.<\/p>\n
This issue was found by our static analysis tool and then confirmed by
\nmanual review of rt2x00lib_probe_dev() and rt2x00lib_remove_dev(). The
\nearly probe exits should not call a common teardown path that assumes the
\nlater work setup has already completed.<\/p>\n
A QEMU PoC forced alloc_ordered_workqueue() to fail before the work
\ninitializers are reached. The resulting fail path entered
\nrt2x00lib_remove_dev(), and DEBUG_OBJECTS reported invalid work drains with
\nrt2x00lib_probe_dev() and rt2x00lib_remove_dev() in the stack.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: rt2x00: avoid full teardown before work setup in probe<\/p>\n
rt2x00lib_probe_dev() uses the full rt2x00lib_remove_dev() teardown f<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6726","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6726","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=6726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6726"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}