In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
firmware: arm_scmi: Quiesce notifications before teardown<\/p>\n
scmi_notification_exit() clears and releases the notification instance,
\nbut transport callbacks can still deliver incoming notifications until
\nthe TX\/RX channels are freed. During remove, an RX interrupt in that
\nwindow can enter scmi_notify() while notification state is being torn
\ndown and then dereference freed memory. The same ordering exists on the
\nprobe error path after notification initialization.<\/p>\n
The notification late-init worker has a separate lifetime issue: protocol
\nevent registration queues ni->init_work on the system workqueue, so
\ndestroying ni->notify_wq does not drain that work. If the devres group is
\nreleased while init_work is still pending or running, the late-init worker
\ncan dereference the freed notification instance.<\/p>\n
Quiesce the notification core before TX\/RX channels are torn down, then
\nclean up the channels before releasing the notification core resources.
\nUse disable_work_sync() so future late-init queueing is rejected and any
\nalready queued or running late-init work has completed before channel
\nteardown starts.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
firmware: arm_scmi: Quiesce notifications before teardown<\/p>\n
scmi_notification_exit() clears and releases the notification instance,<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25948","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25948","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=25948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}