In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
rust: devres: fix race between concurrent revokers<\/p>\n
There is a potential race condition when two paths try to revoke a
\nDevres concurrently.<\/p>\n
The driver core’s devres_release_all() calls Revocable::revoke() via the
\nrelease callback, while Devres::drop() calls revoke_nosync() on another
\nCPU.<\/p>\n
The revoker that does not claim the is_available swap returns
\nimmediately, but the revoker that did may still be executing
\ndrop_in_place() on the inner data. This can cause a use-after-free when
\nthe other revoker’s caller proceeds to drop adjacent resources that
\ndrop_in_place() still references (e.g., Devres racing with
\nSGTable freeing the backing sg_table and pages).<\/p>\n
Fix this by adding a Completion. The release callback signals the
\nCompletion after revoke() finishes, and Devres::drop() waits for it when
\nit loses the is_available swap. This ensures the wrapped object is fully
\ntorn down before Devres::drop() returns.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
rust: devres: fix race between concurrent revokers<\/p>\n
There is a potential race condition when two paths try to revoke a
\nDevres concu<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21686","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21686","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=21686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}