{"id":5440,"date":"2026-09-04T18:47:50","date_gmt":"2026-09-04T10:47:50","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68373"},"modified":"2026-09-04T18:47:50","modified_gmt":"2026-09-04T10:47:50","slug":"cve-2026-68373","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-68373","title":{"rendered":"CVE-2026-68373 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x-usb: a"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()<\/p>\n<p>at76_guess_freq() checks only that the received frame is at least a bare<br \/>\n802.11 header (24 bytes) before subtracting the fixed management-body<br \/>\noffset:<\/p>\n<p>\tlen -= el_off;<\/p>\n<p>For both beacon and probe response frames, el_off is 36. If the frame is<br \/>\nshorter than el_off, subtracting it causes the calculated IE length to<br \/>\nwrap. The length is eventually passed to cfg80211_find_elem_match() as a<br \/>\nvery large unsigned value, so the element walk runs beyond the RX skb.<\/p>\n<p>This path is reached from at76_rx_tasklet() while scanning. If the device<br \/>\ndelivers a truncated beacon or probe response, the oversized IE length<br \/>\ncauses an out-of-bounds read during scanning.<\/p>\n<p>Skip the IE lookup if the frame does not reach the variable elements,<br \/>\nbefore subtracting el_off.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()<\/p>\n<p>at76_guess_freq() checks only that the received frame is at least <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5440","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5440","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=5440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}