{"id":"CVE-2026-74602","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()\n\nIn rb_allocate_cpu_buffer(), bpage->order was omitted, leaving it as 0.\nThis is an issue for a ri…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()\n\nIn rb_allocate_cpu_buffer(), bpage->order was omitted, leaving it as 0.\nThis is an issue for a ri…","severity":"none","published":"2026-08-22","updated":"2026-10-14","sourceUpdated":"2026-10-14T13:10:00.187","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74602","references":[{"url":"https://git.kernel.org/stable/c/2e37f2bf111429fbfa4d985b12df3ba496ca70aa","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6d014e44b68ddd43f71288d2a4dbb1a259869149","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7c620d89bae1a926ab7d626600285d3516c9f3c4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00168,"epssPercentile":0.05628,"ingestedAt":"2026-10-14T13:30:58.512Z","slug":"CVE-2026-74602","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()\n\nIn rb_allocate_cpu_buffer(), bpage->order was omitted, leaving it as 0.\nThis is an issue for a ring-buffer with subbufs bigger than PAGE_SIZE if\nwhen freed: free_buffer_page() relies on this value. Align the value\nwith the actual allocation size (buffer::subbuf_order).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}