{"id":11217,"date":"2026-09-04T18:51:45","date_gmt":"2026-09-04T10:51:45","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74611"},"modified":"2026-09-04T18:51:45","modified_gmt":"2026-09-04T10:51:45","slug":"cve-2026-74611","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74611","title":{"rendered":"CVE-2026-74611 [CRITICAL] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ntls: rx: restore msg_"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tls: rx: restore msg_iter before TLS 1.3 optimistic retry<\/p>\n<p>tls_decrypt_sg() advances msg-&gt;msg_iter when it maps user pages for<br \/>\nthe optimistic TLS 1.3 zero-copy path. If the decrypted record turns<br \/>\nout not to be unpadded application data, tls_decrypt_sw() retries into<br \/>\na kernel skb, but leaves the iterator advanced.<\/p>\n<p>The subsequent copy from the skb then writes decrypted bytes again at<br \/>\na later point in the caller iovecs while recvmsg() reports only the<br \/>\npost-retry length. A TLS peer can trigger this after the receiver<br \/>\nenables TLS_RX_EXPECT_NO_PAD.<\/p>\n<p>Revert the iterator by the number of bytes consumed by the optimistic<br \/>\nmapping before retrying without zero-copy.<\/p>\n<p>Add a selftest which sends a TLS 1.3 control record with<br \/>\nTLS_RX_EXPECT_NO_PAD enabled and verifies that recvmsg() does not<br \/>\noverwrite later iovecs beyond the returned length.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>tls: rx: restore msg_iter before TLS 1.3 optimistic retry<\/p>\n<p>tls_decrypt_sg() advances msg-&gt;msg_iter when it maps user pages for<br \/>\nthe <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-11217","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/11217","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=11217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}