{"id":7566,"date":"2026-09-04T18:49:36","date_gmt":"2026-09-04T10:49:36","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74551"},"modified":"2026-09-04T18:49:36","modified_gmt":"2026-09-04T10:49:36","slug":"cve-2026-74551","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-74551","title":{"rendered":"CVE-2026-74551 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (nzxt-smart2)"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>hwmon: (nzxt-smart2) DMA-align output buffer<\/p>\n<p>Sashiko reports:<\/p>\n<p>When send_output_report() calls hid_hw_output_report(), the underlying USB<br \/>\nHID core calls usb_interrupt_msg() which maps this buffer directly for DMA.<\/p>\n<p>When the DMA mapping flushes or invalidates the cacheline, it will corrupt<br \/>\nthe adjacent variables (mutex, update_interval) that were modified<br \/>\nconcurrently by the CPU. This causes memory corruption due to cacheline<br \/>\nsharing on non-coherent CPU architectures (such as ARM or MIPS). The DMA<br \/>\nAPI debugging tool (CONFIG_DMA_API_DEBUG) will trigger runtime warnings<br \/>\nfor this violation.<\/p>\n<p>Any operation that triggers send_output_report() (like setting a fan speed<br \/>\nor updating the interval) causes the USB DMA mapping. On systems with<br \/>\nnon-coherent caches, this structural bug causes immediate and deterministic<br \/>\nmemory corruption.<\/p>\n<p>Align the output buffer to ARCH_DMA_MINALIGN to fix the problem.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>hwmon: (nzxt-smart2) DMA-align output buffer<\/p>\n<p>Sashiko reports:<\/p>\n<p>When send_output_report() calls hid_hw_output_report(), the underly<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7566","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7566","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=7566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}