{"id":16125,"date":"2026-09-04T19:05:09","date_gmt":"2026-09-04T11:05:09","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-46320"},"modified":"2026-09-04T19:05:09","modified_gmt":"2026-09-04T11:05:09","slug":"cve-2026-46320","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-46320","title":{"rendered":"CVE-2026-46320 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ntap: free page on err"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tap: free page on error paths in tap_get_user_xdp()<\/p>\n<p>tap_get_user_xdp() rejects a frame shorter than ETH_HLEN with -EINVAL,<br \/>\nand returns -ENOMEM when build_skb() fails. Both paths jump to the err<br \/>\nlabel without freeing the page that vhost_net_build_xdp() allocated for<br \/>\nthe frame. tap_sendmsg() discards the per-buffer return value and always<br \/>\nreturns 0, so vhost_tx_batch() takes the success path and never frees<br \/>\nthe page; each rejected frame in a batch leaks one page-frag chunk.<\/p>\n<p>Free the page on both error paths, before the skb is built. This is the<br \/>\ntap counterpart of the same leak in tun_xdp_one().<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tap: free page on error paths in tap_get_user_xdp()<\/p>\n<p>tap_get_user_xdp() rejects a frame shorter than ETH_HLEN with -EINVAL,<br \/>\nand ret<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-16125","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/16125","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=16125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}