{"id":28530,"date":"2026-09-25T00:31:36","date_gmt":"2026-09-24T16:31:36","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-93266"},"modified":"2026-09-25T00:31:36","modified_gmt":"2026-09-24T16:31:36","slug":"cve-2026-93266","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-93266","title":{"rendered":"CVE-2026-93266 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\narm64: RSI: fix field"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>arm64: RSI: fix field-spanning write warning in attestation token init<\/p>\n<p>The challenge is passed in registers a1 through a8. However, copying to<br \/>\n&amp;regs.a1 makes FORTIFY treat the destination as the single a1 field,<br \/>\nresulting in a field-spanning write warning. [1]<\/p>\n<p>Overlay the SMCCC register structure with an RSI-specific argument<br \/>\nlayout and copy the challenge into an explicit 64-byte array. This keeps<br \/>\nthe existing a1-a8 argument encoding while giving the copy a correctly<br \/>\nsized destination object.<\/p>\n<p>[1]<br \/>\nmemcpy: detected field-spanning write (size 64) of single field &#8220;&amp;regs.a1&#8221; at .\/arch\/arm64\/include\/asm\/rsi_cmds.h:119 (size 8)<br \/>\nWARNING: .\/arch\/arm64\/include\/asm\/rsi_cmds.h:119 at rsi_attestation_token_init+0xdc\/0xf8 [arm_cca_guest], CPU#0: cat\/3314<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>arm64: RSI: fix field-spanning write warning in attestation token init<\/p>\n<p>The challenge is passed in registers a1 through a8. However<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-28530","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/28530","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=28530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}