{"id":11949,"date":"2026-09-04T18:53:59","date_gmt":"2026-09-04T10:53:59","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80544"},"modified":"2026-09-04T18:53:59","modified_gmt":"2026-09-04T10:53:59","slug":"cve-2026-80544","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80544","title":{"rendered":"CVE-2026-80544 [HIGH] &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\ns390\/zcrypt: Improve"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>s390\/zcrypt: Improve EP11 CPRB domain handling with ASN.1 parsing<\/p>\n<p>The zcrypt_msgtype6_send_ep11_cprb() function uses fragile struct<br \/>\noverlays to access and modify the domain field in the EP11 CPRB<br \/>\npayload, creating maintainability and security concerns:<br \/>\n1. Struct overlay approach (pld_hdr) assumes fixed payload structure<br \/>\n   and doesn&#8217;t validate the actual ASN.1 encoding.<br \/>\n2. Complex length format detection logic is error-prone and doesn&#8217;t<br \/>\n   properly validate bounds at each parsing step.<br \/>\n3. Direct struct member access bypasses proper ASN.1 validation.<\/p>\n<p>Fix by replacing struct overlays with explicit ASN.1 parsing that<br \/>\nvalidates each field (payload tag\/length, function tag\/length\/value,<br \/>\noptional domain tag\/length\/value) with proper bounds checking at every<br \/>\nstep. Add asn1_int_encode() helper function to safely write integer<br \/>\nvalues with correct endianness conversion. This makes the code<br \/>\nconsistent with the validation pattern introduced with the rework of<br \/>\nthe xcrb_msg_to_type6_ep11cprb_msgx() function.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>s390\/zcrypt: Improve EP11 CPRB domain handling with ASN.1 parsing<\/p>\n<p>The zcrypt_msgtype6_send_ep11_cprb() function uses fragile struc<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-11949","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/11949","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=11949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}