{"id":29299,"date":"2026-09-25T20:32:22","date_gmt":"2026-09-25T12:32:22","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98145"},"modified":"2026-09-25T20:32:22","modified_gmt":"2026-09-25T12:32:22","slug":"cve-2026-98145","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98145","title":{"rendered":"CVE-2026-98145 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\naccel\/amdxdna: reject"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>accel\/amdxdna: reject a command chain that carries no commands<\/p>\n<p>A chain whose command_count is zero passes the payload length check,<br \/>\nbecause struct_size(payload, data, 0) is just the header. The fill loop<br \/>\nthen does not run, so offset stays zero and the request is submitted with<br \/>\na zero-length buffer.<\/p>\n<p>On firmware without AIE2_NPU_COMMAND that ends at the opcode check, since<br \/>\nop is still ERT_INVALID_CMD and aie2_get_chain_msg_op() answers<br \/>\nMSG_OP_MAX_OPCODE. aie2_get_npu_chain_msg_op() answers<br \/>\nMSG_OP_CHAIN_EXEC_NPU whatever it is given, so there the submission<br \/>\ncontinues to drm_clflush_virt_range(cmd_buf, 0), which reads the byte<br \/>\nbefore the buffer and faults on the vmap guard page. EXEC_CMD is<br \/>\nreachable by any process that can open the render node.<\/p>\n<p>Reject the request instead.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>accel\/amdxdna: reject a command chain that carries no commands<\/p>\n<p>A chain whose command_count is zero passes the payload length check<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29299","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29299","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=29299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}