{"id":7242,"date":"2026-09-04T18:49:28","date_gmt":"2026-09-04T10:49:28","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74300"},"modified":"2026-09-04T18:49:28","modified_gmt":"2026-09-04T10:49:28","slug":"cve-2026-74300","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74300","title":{"rendered":"CVE-2026-74300 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci: valid"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>Bluetooth: hci: validate codec capability element length<\/p>\n<p>Read Local Codec Capabilities returns a sequence of capability elements.<br \/>\nEach element starts with a one-byte length followed by that many payload<br \/>\nbytes.<\/p>\n<p>hci_read_codec_capabilities() checks that the skb contains the length<br \/>\nbyte, but then validates only caps-&gt;len against the remaining skb<br \/>\nlength.  A malformed controller response with one remaining byte and<br \/>\ncaps-&gt;len set to one passes that check even though the element needs two<br \/>\nbytes.  The parser then records a two-byte capability and copies one<br \/>\nbyte beyond the advertised response payload into the codec list.<\/p>\n<p>Validate the full element size, including the length byte, before adding<br \/>\nit to the accumulated capability length.  This preserves all well-formed<br \/>\ncapability elements and drops only truncated controller responses.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>Bluetooth: hci: validate codec capability element length<\/p>\n<p>Read Local Codec Capabilities returns a sequence of capability elements.<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7242","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7242","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=7242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}