In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
serial: core: clear freed pointers on uart_register_driver() failure<\/p>\n
uart_register_driver() leaves drv->state pointing to freed memory when
\ntty_alloc_driver() fails. If tty_register_driver() fails, drv->tty_driver
\nalso retains a pointer after its reference is dropped.<\/p>\n
Drivers that use drv->state as an “already registered” flag can then skip
\nregistration on the next probe and pass the freed state to
\nuart_add_one_port().<\/p>\n
This issue was found with failslab on QEMU’s raspi1ap board by
\nfailing registration and binding the PL011 port again.<\/p>\n
Clear both pointers on their failure paths, as uart_unregister_driver()
\nalready does.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
serial: core: clear freed pointers on uart_register_driver() failure<\/p>\n
uart_register_driver() leaves drv->state pointing to freed me<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25745","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25745","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=25745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}