{"id":26708,"date":"2025-11-18T17:24:49","date_gmt":"2025-11-18T17:24:49","guid":{"rendered":"http:\/\/localhost\/?p=26708"},"modified":"2025-11-18T17:24:49","modified_gmt":"2025-11-18T17:24:49","slug":"grub2-missing-unregister-call-for-normalexit-command-may-lead-to-use-after-free","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=26708","title":{"rendered":"Grub2: missing unregister call for normal_exit command may lead to use-after-free_CVE-2025-61664"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. 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This flaw, a memory Use After Free issue, occurs because the normal_exit&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,65,12,21,13,7,11,5],"class_list":["post-26708","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-49","tag-exploit","tag-medium","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Grub2: missing unregister call for normal_exit command may lead to use-after-free_CVE-2025-61664 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/zero.redgem.net\/?p=26708\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Grub2: missing unregister call for normal_exit command may lead to use-after-free_CVE-2025-61664 - zero redgem\" \/>\n<meta property=\"og:description\" content=\"{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;A vulnerability in the GRUB2 bootloader has been identified in the normal module. 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