{"id":7246,"date":"2026-09-04T18:49:29","date_gmt":"2026-09-04T10:49:29","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74305"},"modified":"2026-09-04T18:49:29","modified_gmt":"2026-09-04T10:49:29","slug":"cve-2026-74305","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74305","title":{"rendered":"CVE-2026-74305 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Tighten cgroup s"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>bpf: Tighten cgroup storage cookie checks for prog arrays<\/p>\n<p>The fix in commit abad3d0bad72 (&#8220;bpf: Fix oob access in cgroup local<br \/>\nstorage&#8221;) is still incomplete. The prog-array compatibility check<br \/>\ntreats a program with no cgroup storage as compatible with any stored<br \/>\nstorage cookie. This allows a storage-less program to bridge a tail<br \/>\ncall chain between an entry program and a storage-using callee even<br \/>\nthough cgroup local storage at runtime still follows the caller&#8217;s<br \/>\ncontext, that is, A -&gt; B(no storage) -&gt; C(storage) path.<\/p>\n<p>Requiring exact cookie equality would break the legitimate case of a<br \/>\nstorage-less leaf program being tail called from a storage-using one.<br \/>\nInstead, only accept a zero storage cookie if the program cannot<br \/>\nperform tail calls itself. This keeps A -&gt; B(no storage) working<br \/>\nwhile rejecting the A -&gt; B(no storage) -&gt; C(storage) bridge.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>bpf: Tighten cgroup storage cookie checks for prog arrays<\/p>\n<p>The fix in commit abad3d0bad72 (&#8220;bpf: Fix oob access in cgroup local<br \/>\nsto<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7246","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7246","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=7246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}