In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
packet: use consistent hard_header_len in TX_RING send path<\/p>\n
tpacket_snd() reads dev->hard_header_len independently for skb
\nallocation and header construction in tpacket_fill_skb(). Concurrent
\nnetdevice reconfiguration can therefore make the reserved headroom
\nsmaller than the amount later pushed, or make copylen – hard_header_len
\nnegative.<\/p>\n
Snapshot hard_header_len once before processing ring frames and use it
\nfor the frame limit, headroom allocation, copy length, and skb
\nconstruction. Pass the snapshot to tpacket_fill_skb().<\/p>\n
The separate SOCK_DGRAM consistency problem between hard_header_len and
\nheader_ops->create is not addressed here.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
packet: use consistent hard_header_len in TX_RING send path<\/p>\n
tpacket_snd() reads dev->hard_header_len independently for skb
\nallocat<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-11254","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/11254","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=11254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}