In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net: ravb: serialize PTP clock teardown<\/p>\n
ravb_ptp_interrupt() can race with ravb_ptp_stop() and pass the clock to
\nptp_clock_event() while ptp_clock_unregister() is freeing it. This can
\nlead to a use-after-free.<\/p>\n
Use READ_ONCE() and WRITE_ONCE() for lockless access to the clock pointer.
\nAtomically detach it with xchg() before disabling PTP interrupts, then
\nsynchronize all IRQs which can invoke ravb_ptp_interrupt() before
\nunregistering the detached clock.<\/p>\n
A handler which read the old pointer completes before the clock is
\nunregistered, while later handlers read NULL and skip the event.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net: ravb: serialize PTP clock teardown<\/p>\n
ravb_ptp_interrupt() can race with ravb_ptp_stop() and pass the clock to
\nptp_clock_event()<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21324","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21324","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=21324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}