In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
arm_mpam: Disable driver unbind to avoid UAF<\/p>\n
When a user unbinds an MSC and that MSC is the only MSC left for a
\ncomponent then the corresponding mpam_component will be freed. If the user
\nthen goes on to read the schemata file in the resctrl filesystem then the
\nmpam_component will be accessed from resctrl_arch_get_config() leading to a
\nuse after free.<\/p>\n
As the MPAM driver is not a module the unbind sysfs interface is the only
\nway to trigger the remove. Instead of dealing with the complexity of
\nallowing some unused MSC to unbind just remove the unbind sysfs interface.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
arm_mpam: Disable driver unbind to avoid UAF<\/p>\n
When a user unbinds an MSC and that MSC is the only MSC left for a
\ncomponent then the<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25679","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25679","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=25679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}