In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
nfsd: ensure nfsd_file_do_acquire() does not use a non-opened file<\/p>\n
->atomic_open is permitted to return success without actually opening
\nthe file. It indicates this by calling finish_no_open().
\nThis means dentry_create() can return a file which hasn’t been opened.
\nThis is extremely unlikely as ->atomic_open handlers typically
\nuse finish_no_open() only for already existing files, and dentry_create()
\nisn’t called in that case, and the parent being locked should prevent
\nraces.<\/p>\n
However out of an abundance of caution it seems wise to teach nfsd to
\nonly use the file returned by dentry_create() if FMODE_OPENED is set,
\nindicating that it has in fact been opened.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
nfsd: ensure nfsd_file_do_acquire() does not use a non-opened file<\/p>\n
->atomic_open is permitted to return success without actually o<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21609","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21609","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=21609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}