{"id":15403,"date":"2026-09-04T19:02:38","date_gmt":"2026-09-04T11:02:38","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-59145"},"modified":"2026-09-04T19:02:38","modified_gmt":"2026-09-04T11:02:38","slug":"cve-2026-59145","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-59145","title":{"rendered":"CVE-2026-59145 [CRITICAL] &#8211; Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalid"},"content":{"rendered":"<p>Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find.<\/p>\n<p>The attach-time validator si_validate_header is thorough about the header and layout (magic, version, section offsets, total_size, count and arena_used) but does not validate the three arrays it then trusts. Every lookup in si_idx_find walks a triple indirection read straight from the mmap&#8217;d segment, arena[reverse[slots[i].id]], with no bound on slots[i].id against count, on the reverse[id] arena offset against arena_used, or on the arena record&#8217;s length prefix.<\/p>\n<p>A local peer that can write the backing file can leave the header valid while poisoning a slot id, a reverse offset or an arena length prefix, so an id_of, intern or string lookup dereferences the chain out of bounds; because string() returns a file-controlled length of bytes from the arena, adjacent process memory can be disclosed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find.<\/p>\n<p>The attach-time validator si_validate_header is thorough<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15403","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15403","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=15403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}