In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
firewire: net: Fix fragmented datagram reassembly<\/p>\n
fwnet_frag_new() keeps a sorted list of received fragments for a partial
\ndatagram. When a new fragment is adjacent to an existing fragment, the
\ncode checks whether the new fragment also closes the gap to the next or
\nprevious list entry.<\/p>\n
Those neighbor lookups currently assume that the current fragment always
\nhas a real next or previous fragment. At a list edge, the next or
\nprevious entry is the list head, not a struct fwnet_fragment_info.<\/p>\n
The gap checks also compare against the old edge of the current fragment
\ninstead of the edge after adding the new fragment. As a result, a
\nfragment that bridges two existing ranges may leave two adjacent ranges
\nunmerged, so fwnet_pd_is_complete() can miss a complete datagram.<\/p>\n
Check for the list head before looking up the neighboring fragment, and
\ncompare the neighbor against the new fragment’s far edge when deciding
\nwhether to merge all three ranges.<\/p>\n
This issue was found by a static analysis checker and confirmed by
\nmanual source review.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
firewire: net: Fix fragmented datagram reassembly<\/p>\n
fwnet_frag_new() keeps a sorted list of received fragments for a partial
\ndatagra<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5437","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5437","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=5437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}