In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
tun: free page on build_skb failure in tun_xdp_one()<\/p>\n
When build_skb() fails in tun_xdp_one(), the function sets ret to
\n-ENOMEM and jumps to the out label, which returns without freeing the
\npage that vhost_net_build_xdp() allocated for the frame. As with the
\nshort-frame rejection path, tun_sendmsg() discards the per-buffer error
\nand still returns total_len, so vhost_tx_batch() takes the success path
\nand never frees the page. Each build_skb() failure in a batch leaks one
\npage-frag chunk.<\/p>\n
Free the page before taking the error path, matching the put_page() the
\nother error exits of tun_xdp_one() already perform.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
tun: free page on build_skb failure in tun_xdp_one()<\/p>\n
When build_skb() fails in tun_xdp_one(), the function sets ret to
\n-ENOMEM and<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-16127","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/16127","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=16127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}