{"id":29196,"date":"2026-09-25T20:32:07","date_gmt":"2026-09-25T12:32:07","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98041"},"modified":"2026-09-25T20:32:07","modified_gmt":"2026-09-25T12:32:07","slug":"cve-2026-98041","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98041","title":{"rendered":"CVE-2026-98041 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Don&#8217;t predict JM"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>bpf: Don&#8217;t predict JMP32 pointer vs zero comparisons<\/p>\n<p>Consider the following program:<\/p>\n<p>        r1 = map_value;      \/* low 32 bits are zero at runtime *\/<br \/>\n        r6 = 0xdead000000000000;<br \/>\n        if w1 != 0 goto l1;<br \/>\n    l0: r1 += r6;<br \/>\n        r2 = *(u64 *)(r1 + 0);<br \/>\n        exit;<br \/>\n    l1: r6 = 0;<br \/>\n        goto l0;<\/p>\n<p>At the moment is_branch_taken() reports the jump as always taken,<br \/>\nbecause it does not distinguish between BPF_JMP and BPF_JMP32<br \/>\ncomparisons when processing &#8216;if w1 != 0 &#8230;&#8217;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>bpf: Don&#8217;t predict JMP32 pointer vs zero comparisons<\/p>\n<p>Consider the following program:<\/p>\n<p>        r1 = map_value;      \/* low 32 bits <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29196","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29196","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=29196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}