In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
btrfs: fix the possible bioc_list memory leak during error<\/p>\n
There are two possible ways to leak bioc memory on
\nbtrfs_ordered_extent::bioc_list:<\/p>\n
– An error occurred for btrfs_insert_one_raid_extent()
\n Then the function btrfs_insert_raid_extent() immediately return
\n without freeing any bioc in the bioc_list.<\/p>\n
– An ordered extent hit an IO error
\n In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and
\n skip the call on btrfs_insert_raid_extent() completely.<\/p>\n
Fix the problem by:<\/p>\n
– Introduce a new helper, btrfs_cleanup_ordered_bioc_list()
\n Which will remove all bioc from the bioc_list, and release the bioc.<\/p>\n
– Call the above helper for btrfs_insert_raid_extent()
\n So that the cleanup helper is always called no matter what.<\/p>\n
– Call the above helper for btrfs_finish_one_ordered()
\n This is called just before the final release on the ordered extent.<\/p>\n
This was reported by Sashiko when reviewing another patch.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
btrfs: fix the possible bioc_list memory leak during error<\/p>\n
There are two possible ways to leak bioc memory on
\nbtrfs_ordered_extent<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29237","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29237","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=29237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}