{"id":21276,"date":"2026-09-12T04:30:58","date_gmt":"2026-09-11T20:30:58","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80943"},"modified":"2026-09-12T04:30:58","modified_gmt":"2026-09-11T20:30:58","slug":"cve-2026-80943","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80943","title":{"rendered":"CVE-2026-80943 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: rtl819"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>wifi: rtlwifi: rtl8192du: check QoS TID before indexing tids<\/p>\n<p>rtl92du_tx_fill_desc() uses ieee80211_get_tid() to read the QoS TID<br \/>\nfrom the 802.11 header and then uses it as an index into<br \/>\nsta_entry-&gt;tids[]. ieee80211_get_tid() returns the low 4-bit QoS TID<br \/>\nvalue, so the result can be in the range 0..15.<\/p>\n<p>rtlwifi only allocates MAX_TID_COUNT entries for sta_entry-&gt;tids[], and<br \/>\nMAX_TID_COUNT is 9. A QoS TID greater than 8 therefore indexes past the<br \/>\naggregation state array. Keep the default RTL_AGG_STOP state for<br \/>\nout-of-range TIDs, matching rtl92cu_tx_fill_desc().<\/p>\n<p>This issue was detected by our static analysis tool and confirmed by<br \/>\nmanual audit. UBSAN validation for the same bug pattern reports an<br \/>\narray-index-out-of-bounds access with index 10 for type<br \/>\n&#8216;rtl_tid_data [9]&#8217;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>wifi: rtlwifi: rtl8192du: check QoS TID before indexing tids<\/p>\n<p>rtl92du_tx_fill_desc() uses ieee80211_get_tid() to read the QoS TID<br \/>\nf<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21276","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21276","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=21276"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21276"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}