{"id":25489,"date":"2026-09-18T04:31:27","date_gmt":"2026-09-17T20:31:27","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-90080"},"modified":"2026-09-18T04:31:27","modified_gmt":"2026-09-17T20:31:27","slug":"cve-2026-90080","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-90080","title":{"rendered":"CVE-2026-90080 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: fix NUL"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup<\/p>\n<p>af_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is<br \/>\nallocated during PF\/VF probe. Representors and other non-AF_XDP paths<br \/>\nleave the pointer NULL, but several call sites used test_bit() on it<br \/>\nunconditionally.<\/p>\n<p>Switching to devlink eswitch mode creates representors and runs<br \/>\notx2_init_hw_resources(), which reaches otx2_pool_aq_init() and oopses<br \/>\nwhen dereferencing the NULL bitmap. Add NULL checks before every<br \/>\naf_xdp_zc_qidx test_bit() use in the RSS, ethtool, XSK, and pool init<br \/>\npaths.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup<\/p>\n<p>af_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is<br \/>\nall<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25489","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25489","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=25489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}