In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net: dsa: mxl862xx: disable the stats poll on teardown<\/p>\n
mxl862xx_setup() arms the stats poll before mxl862xx_setup_mdio(), and
\nnothing stops it until dsa_register_switch() has returned an error to
\nmxl862xx_probe(). DSA frees the dsa_port list before it returns, so a
\npoll that fires once .setup or a later step of dsa_tree_setup() has
\nfailed walks freed ports. On shutdown the user ports stay registered,
\nand the WORK_STOPPED flag test in mxl862xx_get_stats64() is not atomic
\nwith the cancel in mxl862xx_shutdown(), so a re-arm that read the flag
\nbefore it was set queues the poll after cancel_delayed_work_sync() has
\nreturned.<\/p>\n
Arm the poll once .setup has succeeded and stop it from a .teardown op,
\nwhich DSA calls on unregister and after a failed registration, in both
\ncases before it frees the ports. Use disable_delayed_work_sync() there
\nand in shutdown(): it drains a running poll as the cancel did and turns
\nevery later attempt to queue the work into a no-op, so the re-arm
\ncannot bring the poll back. remove() and the probe error path only set
\nWORK_STOPPED, which crc_err_work tests before it walks the ports.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net: dsa: mxl862xx: disable the stats poll on teardown<\/p>\n
mxl862xx_setup() arms the stats poll before mxl862xx_setup_mdio(), and
\nnoth<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-33374","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/33374","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=33374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33374"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}