{"id":28638,"date":"2026-09-25T04:31:30","date_gmt":"2026-09-24T20:31:30","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-93823"},"modified":"2026-09-25T04:31:30","modified_gmt":"2026-09-24T20:31:30","slug":"cve-2026-93823","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-93823","title":{"rendered":"CVE-2026-93823 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ndrm\/amdkfd: Let drive"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/amdkfd: Let driver decide buffer size at AMDKFD_IOC_GET_DMABUF_INFO ioctl<\/p>\n<p>amdkfd driver needs allocate buffer to return bo metadata to user space. The<br \/>\nbuffer size is controlled by user currently. It is a potential security issue<br \/>\nthat hostile value (e.g. 2 GiB) lets any render-group user trigger order-MAX<br \/>\nallocation\/OOM in kernel context.<\/p>\n<p>This patch first finds bo metadata size. If the size is smaller than user<br \/>\nprovided value drive can safely allocate buffer in kernel space and copy to<br \/>\nuser space buffer. If not, driver will let user know, not allocate and copy.<br \/>\nUser will redo with new buffer in user space.<\/p>\n<p>This patch lets driver decide buffer allocation size to avoid potential hostile<br \/>\nsize from user space.<\/p>\n<p>(cherry picked from commit f54ce9e8cbd3abe0eda3a285f54dc4f572fe589a)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>drm\/amdkfd: Let driver decide buffer size at AMDKFD_IOC_GET_DMABUF_INFO ioctl<\/p>\n<p>amdkfd driver needs allocate buffer to return bo met<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-28638","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/28638","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=28638"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28638"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}