In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ocfs2: fix buffer head management in ocfs2_read_blocks()<\/p>\n
In ocfs2_read_blocks(), caller should’t assume that buffer head returned
\nby ‘sb_getblk()’ is exclusively owned and so ‘put_bh()’ always drops
\nb_count from 1 to 0. If it is not so, buffer head remains on hold and
\nlikely to be returned by the next call to ‘sb_getblk()’ unchanged – that
\nis, with BH_Uptodate bit set even if it has failed validation previously,
\nthus allowing to insert that buffer head into OCFS2 metadata cache and
\nsubmit it to upper layers. To avoid such a scenario, BH_Uptodate should
\nbe cleared immediately after ‘validate()’ callback has detected some data
\ninconsistency.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ocfs2: fix buffer head management in ocfs2_read_blocks()<\/p>\n
In ocfs2_read_blocks(), caller should’t assume that buffer head returned<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17429","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17429","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=17429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17429"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}