{"id":"CVE-2026-89502","summary":"ring-buffer: Free cpu_buffer::free_page with subbuf_order","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Free cpu_buffer::free_page with subbuf_order\n\nWhen sub-buffers use an order greater than 0, cpu_buffer-\u003efree_page is\nallocated with subbuf_order. Use the correct order for\ncpu_buffer-\u003efree_page.","modified":"2026-09-13T03:47:18.416234347Z","published":"2026-09-11T19:43:50.700Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89502.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/234b1a72e9706fe20c08c96f4374ec8e83b934cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/77275ccea06eaf297e8e6ac3fc830cb72086379a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/81063bbb16c4fcf0136c9117d5e49d3621dd6a1e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8c1ecdcdea738efe0494af908f12c0ae3a97fffa"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89502.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89502"},{"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":"77275ccea06eaf297e8e6ac3fc830cb72086379a"},{"fixed":"8c1ecdcdea738efe0494af908f12c0ae3a97fffa"},{"fixed":"81063bbb16c4fcf0136c9117d5e49d3621dd6a1e"},{"fixed":"234b1a72e9706fe20c08c96f4374ec8e83b934cb"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89502.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.8.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89502.json"}}],"schema_version":"1.9.0"}