{"id":"CVE-2026-74602","summary":"ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()","details":"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-\u003eorder 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).","modified":"2026-08-25T03:51:43.906457549Z","published":"2026-08-22T15:31:50.811Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74602.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2e37f2bf111429fbfa4d985b12df3ba496ca70aa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6d014e44b68ddd43f71288d2a4dbb1a259869149"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7c620d89bae1a926ab7d626600285d3516c9f3c4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74602.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74602"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f9b94daa542a8d2532f0930f01cd9aec2d19621b"},{"fixed":"7c620d89bae1a926ab7d626600285d3516c9f3c4"},{"fixed":"2e37f2bf111429fbfa4d985b12df3ba496ca70aa"},{"fixed":"3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a"},{"fixed":"6d014e44b68ddd43f71288d2a4dbb1a259869149"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74602.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.8.0"},{"fixed":"6.12.105"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.45"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74602.json"}}],"schema_version":"1.9.0"}