{"id":21687,"date":"2026-09-12T04:31:31","date_gmt":"2026-09-11T20:31:31","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89765"},"modified":"2026-09-12T04:31:31","modified_gmt":"2026-09-11T20:31:31","slug":"cve-2026-89765","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-89765","title":{"rendered":"CVE-2026-89765 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ntimers\/itimer: Zero-i"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>timers\/itimer: Zero-init old itimerval before copy to userspace<\/p>\n<p>On native sparc64, struct __kernel_old_timeval contains a four-byte hole<br \/>\nafter tv_usec because tv_sec is 64-bit while __kernel_suseconds_t is 32-bit.<br \/>\nput_itimerval() fills only the named fields in a stack-allocated<br \/>\n__kernel_old_itimerval and copies the entire object to userspace, so<br \/>\ngetitimer() can expose the two padding holes.<\/p>\n<p>Zero-initialize the aggregate before assigning the fields so implicit<br \/>\npadding is deterministic before it crosses the user\/kernel boundary.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>timers\/itimer: Zero-init old itimerval before copy to userspace<\/p>\n<p>On native sparc64, struct __kernel_old_timeval contains a four-byt<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21687","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21687","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=21687"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21687"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}