In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ASoC: rt700-sdw: always drain jack work on remove<\/p>\n
rt700_sdw_remove() drains jack_detect_work and jack_btn_check_work only
\nwhen rt700->hw_init is true. That state bit is cleared by
\nrt700_update_status() when the SoundWire slave becomes UNATTACHED, but a
\njack work item can already have been queued by rt700_interrupt_callback()
\nor rt700_jack_init() while the device was initialized.<\/p>\n
Do not use hw_init as the remove-time guard for draining these work
\nobjects. The delayed works are initialized during rt700_init(), so remove
\ncan cancel them unconditionally and pair the object lifetime with the
\ncodec-private data lifetime instead of a mutable hardware state bit.<\/p>\n
This issue was found by our static analysis tool and then confirmed by
\nmanual review of the SoundWire status, interrupt and remove paths. The
\nremove path should drain work based on whether the work object exists, not
\non a runtime hardware state bit that can change after the work was queued.<\/p>\n
A QEMU PoC queued jack_detect_work, simulated SDW_SLAVE_UNATTACHED, and
\nthen entered remove. DEBUG_OBJECTS reported an active timer\/work object
\nassociated with the rt700 jack work path after remove skipped the cancel.<\/p>\n
This is sent as an RFC because the practical trigger depends on SoundWire
\ncore remove ordering after an UNATTACHED status update. If remove cannot
\nrun after hw_init has been cleared while jack work is still pending, this
\nis a defensive lifecycle cleanup rather than a reachable race on current
\nsystems.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ASoC: rt700-sdw: always drain jack work on remove<\/p>\n
rt700_sdw_remove() drains jack_detect_work and jack_btn_check_work only
\nwhen rt7<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-26042","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/26042","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=26042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}