In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
cxl\/mce: Make the MCE notifier per-region<\/p>\n
Flavien Solt reported lifetime issues with the CXL MCE notifier, which
\ncan lead to NULL dereferences and use-after-free in the MCE handler.
\nThe notifier was registered per memory device and stored in ‘struct
\ncxl_memdev_state’, even though it only needs the region state (the
\nregion’s SPA range and its extended linear cache size).<\/p>\n
Instead of keeping the memory device and endpoint alive, the correct fix
\nis to move the notifier into ‘struct cxl_region’ and register it from
\ncxl_region_probe() as it should be a per-region notifier. Setup the
\nregistration to only happen for regions that have an extended linear
\ncache as that is the only current usage.<\/p>\n
Remove cxl_port_get_spa_cache_alias() as it is now dead code.<\/p>\n
[ dj: Update dev_warn() when notifier fails due to kconfig. (Ben) ]<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
cxl\/mce: Make the MCE notifier per-region<\/p>\n
Flavien Solt reported lifetime issues with the CXL MCE notifier, which
\ncan lead to NULL <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21492","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21492","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=21492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}