{"id":29190,"date":"2026-09-25T20:32:06","date_gmt":"2026-09-25T12:32:06","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98035"},"modified":"2026-09-25T20:32:06","modified_gmt":"2026-09-25T12:32:06","slug":"cve-2026-98035","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98035","title":{"rendered":"CVE-2026-98035 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Cancel special f"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>bpf: Cancel special fields when recycling rhtab elements<\/p>\n<p>rhtab_map_update_existing() and rhtab_delete_elem() call<br \/>\nbpf_obj_free_fields() when replacing or deleting a value. These map<br \/>\noperations can run from BPF programs in NMI context, where releasing a<br \/>\nreferenced kptr or another complex field is not generally safe.<\/p>\n<p>Array and hash maps avoid that problem by cancelling only the asynchronous<br \/>\nfields which can be stopped safely in the caller context. Other ownership<br \/>\nstate remains attached to the allocation until its memory allocator<br \/>\ndestructor performs the final cleanup.<\/p>\n<p>Use bpf_obj_cancel_fields() for the corresponding rhtab paths as well. This<br \/>\ncancels timers, workqueues, and task work while allowing rhtab_mem_dtor() to<br \/>\nrelease referenced kptrs when the allocation is eventually destroyed.<\/p>\n<p>[ kkd: Rebased, used direct helper calls, and rewrote the commit log ]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>bpf: Cancel special fields when recycling rhtab elements<\/p>\n<p>rhtab_map_update_existing() and rhtab_delete_elem() call<br \/>\nbpf_obj_free_fie<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29190","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29190","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=29190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}