In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
accel\/ivpu: Validate firmware log buffer metadata<\/p>\n
The tracing log headers parsed by fw_log_print_buffer() reside in
\nDMA-shared BOs that the NPU firmware can write to.<\/p>\n
fw_log_from_bo() validated log->header_size and log->size, but
\nfw_log_print_buffer() re-read those same fields from shared memory
\nafterwards, allowing a TOCTOU where firmware changes them between the
\ncheck and the use, and making the host dereference out-of-bounds
\naddresses while printing logs.<\/p>\n
Snapshot the validated values once with READ_ONCE() and pass them down
\nexplicitly in a new struct ivpu_fw_log_desc instead of re-reading them
\nfrom the shared struct.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
accel\/ivpu: Validate firmware log buffer metadata<\/p>\n
The tracing log headers parsed by fw_log_print_buffer() reside in
\nDMA-shared BOs<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29072","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29072","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=29072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}