{"cve":"CVE-2026-89502","nvd":{"published":"2026-09-11T20:19:32.423","modified":"2026-10-19T09:17:44.410","status":"Received","description":"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->free_page is\nallocated with subbuf_order. Use the correct order for\ncpu_buffer->free_page.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/234b1a72e9706fe20c08c96f4374ec8e83b934cb","https://git.kernel.org/stable/c/77275ccea06eaf297e8e6ac3fc830cb72086379a","https://git.kernel.org/stable/c/81063bbb16c4fcf0136c9117d5e49d3621dd6a1e","https://git.kernel.org/stable/c/8c1ecdcdea738efe0494af908f12c0ae3a97fffa"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-89502","score":0.00206,"percentile":0.10455,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}