{"id":41159,"date":"2026-10-19T00:32:24","date_gmt":"2026-10-18T16:32:24","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98687"},"modified":"2026-10-19T00:32:24","modified_gmt":"2026-10-18T16:32:24","slug":"cve-2026-98687","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98687","title":{"rendered":"CVE-2026-98687 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Reject o"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>thunderbolt: Reject oversized XDomain properties responses<\/p>\n<p>tb_xdp_properties_request() allocates room for 45 data dwords in its<br \/>\n252-byte response buffer.  The XDomain length field is six bits wide,<br \/>\nhowever, and a malicious peer can set it to 63.  After the fixed response<br \/>\nfields are subtracted, the driver treats this as 48 data dwords.<\/p>\n<p>Commit 322e93448d90 (&#8220;thunderbolt: Clamp XDomain response data copy to<br \/>\nallocation size&#8221;) only bounds the copy against data_len.  If data_len is<br \/>\nat least 48, memcpy() reads 192 bytes from the 180-byte res-&gt;data array,<br \/>\ncausing a 12-byte heap out-of-bounds read.  Commit 4db2bd2ed478<br \/>\n(&#8220;thunderbolt: Limit XDomain response copy to actual frame size&#8221;) limits<br \/>\nthe earlier copy but does not constrain this header-derived length.<\/p>\n<p>Reject response data lengths that exceed the allocated source buffer<br \/>\nbefore copying them into the assembled property block.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>thunderbolt: Reject oversized XDomain properties responses<\/p>\n<p>tb_xdp_properties_request() allocates room for 45 data dwords in its<br \/>\n25<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41159","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41159","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=41159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}