In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
btrfs: qgroup: fix a wrong length calculation in qgroup_free_reserved_data()<\/p>\n
In that function, we round down the start position and round up the
\nending position.<\/p>\n
But during the calculation of @len, we use “round_up(start + len,
\nsectorsize)”, which is the rounded up end position, not the rounded up
\nlength.<\/p>\n
Which results a much larger length, and later we are still using
\n“start + len”, which is completely incorrect.<\/p>\n
Fix it by declaring a local @aligned_start and @aligned_len and use them
\ninstead.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
btrfs: qgroup: fix a wrong length calculation in qgroup_free_reserved_data()<\/p>\n
In that function, we round down the start position an<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25668","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25668","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=25668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}