{"id":25976,"date":"2026-09-18T04:32:10","date_gmt":"2026-09-17T20:32:10","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-93119"},"modified":"2026-09-18T04:32:10","modified_gmt":"2026-09-17T20:32:10","slug":"cve-2026-93119","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-93119","title":{"rendered":"CVE-2026-93119 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ljca: bound bank"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>usb: ljca: bound bank_num in ljca_enumerate_gpio()<\/p>\n<p>ljca_enumerate_gpio() reads desc-&gt;bank_num from the device and loops<br \/>\nvalid_pin[i] = get_unaligned_le32(&#8230;) for i &lt; bank_num. valid_pin[]<br \/>\nholds only LJCA_MAX_GPIO_NUM \/ 32 = 2 entries.<\/p>\n<p>Two checks run before the loop. The reply length must match<br \/>\nstruct_size(desc, bank_desc, bank_num). The product<br \/>\npins_per_bank * bank_num must not exceed LJCA_MAX_GPIO_NUM. Neither one<br \/>\nbounds bank_num against the size of valid_pin[]. The reply is capped at<br \/>\nLJCA_MAX_PAYLOAD_SIZE (60) bytes, so the struct_size check limits<br \/>\nbank_num to 9. A device that reports bank_num 9 with pins_per_bank 7<br \/>\nstill passes both checks. gpio_num is 63 and the reply is 56 bytes. The<br \/>\nloop then writes nine u32 into the two entry array and overruns<br \/>\nvalid_pin[] on the stack.<\/p>\n<p>A broken or malicious LJCA device can therefore overflow the stack.<br \/>\nReject a bank_num that does not fit valid_pin[].<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>usb: ljca: bound bank_num in ljca_enumerate_gpio()<\/p>\n<p>ljca_enumerate_gpio() reads desc-&gt;bank_num from the device and loops<br \/>\nvalid_pin[<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25976","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25976","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=25976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}