{"id":66382,"date":"2025-07-16T14:32:07","date_gmt":"2025-07-16T11:02:07","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-27465-xen-hypercall-instruction-replay-vulnerability-arithmetic-flag-handling\/"},"modified":"2025-07-16T14:32:07","modified_gmt":"2025-07-16T11:02:07","slug":"cve-2025-27465-xen-hypercall-instruction-replay-vulnerability-arithmetic-flag-handling","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-27465-xen-hypercall-instruction-replay-vulnerability-arithmetic-flag-handling\/","title":{"rendered":"CVE-2025-27465 &#8211; Xen Hypercall Instruction Replay Vulnerability (Arithmetic Flag Handling)"},"content":{"rendered":"<p><strong>CVE ID : <\/strong>CVE-2025-27465<br \/>\n<br \/>\n<strong>Published : <\/strong> July 16, 2025, 9:15 a.m. | 1\u00a0hour, 20\u00a0minutes ago<br \/>\n<br \/>\n<strong>Description : <\/strong>Certain instructions need intercepting and emulating by Xen.  In some<br \/>\ncases Xen emulates the instruction by replaying it, using an executable<br \/>\nstub.  Some instructions may raise an exception, which is supposed to be<br \/>\nhandled gracefully.  Certain replayed instructions have additional logic<br \/>\nto set up and recover the changes to the arithmetic flags.<\/p>\n<p>For replayed instructions where the flags recovery logic is used, the<br \/>\nmetadata for exception handling was incorrect, preventing Xen from<br \/>\nhandling the the exception gracefully, treating it as fatal instead.<br \/>\n<br \/>\n<strong>Severity:<\/strong> 0.0 | NA<br \/>\n<br \/>\nVisit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2025-27465 Published : July 16, 2025, 9:15 a.m. | 1\u00a0hour, 20\u00a0minutes ago Description : Certain instructions need intercepting and emulating by Xen. In some cases Xen emulates the instruction by replaying it, using an executable stub. Some instructions may raise an exception, which is supposed to be handled gracefully. Certain replayed instructions &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-66382","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/66382","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=66382"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/66382\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=66382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=66382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=66382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}