In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
iommu\/sva: Set handle->dev before the SVA handle is visible<\/p>\n
iommu_attach_device_pasid() installs the new SVA attach handle in the
\ngroup PASID lookup before iommu_sva_bind_device() returns. A concurrent
\nbind can therefore find and reuse the same handle after iommu_sva_lock is
\ndropped.<\/p>\n
handle->dev was initialized after dropping iommu_sva_lock. This leaves a
\nwindow where a racing bind can return a handle whose dev pointer is still
\nNULL. A subsequent iommu_sva_unbind_device() can then dereference it via
\nhandle->dev->iommu_group.<\/p>\n
Initialize handle->dev before releasing iommu_sva_lock so any visible SVA
\nhandle is fully initialized.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
iommu\/sva: Set handle->dev before the SVA handle is visible<\/p>\n
iommu_attach_device_pasid() installs the new SVA attach handle in the<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21373","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21373","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=21373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}