{"id":25732,"date":"2026-09-18T04:31:48","date_gmt":"2026-09-17T20:31:48","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-90323"},"modified":"2026-09-18T04:31:48","modified_gmt":"2026-09-17T20:31:48","slug":"cve-2026-90323","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-90323","title":{"rendered":"CVE-2026-90323 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nublk: validate auto b"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ublk: validate auto buf reg before taking uring_cmd<\/p>\n<p>With UBLK_F_AUTO_BUF_REG, invalid sqe-&gt;addr can fail after<br \/>\nublk_fill_io_cmd() has set UBLK_IO_FLAG_ACTIVE. The uring_cmd is<br \/>\ncompleted while the tag stays active, which can hang teardown.<\/p>\n<p>Split validation from buffer apply so the check has no side effects,<br \/>\nthen take the uring_cmd and store the already-validated buffer. Apply<br \/>\nthe same order in FETCH so io-&gt;buf is not written before __ublk_fetch()<br \/>\nstate checks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>ublk: validate auto buf reg before taking uring_cmd<\/p>\n<p>With UBLK_F_AUTO_BUF_REG, invalid sqe-&gt;addr can fail after<br \/>\nublk_fill_io_cmd() <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25732","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25732","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=25732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}