{"id":"CVE-2026-89502","revision":"37829e31b3254ec091b1e35e6b8da747","records":[{"revision":"37829e31b3254ec091b1e35e6b8da747","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89502","aliases":[],"title":"ring-buffer: Free cpu_buffer::free_page with subbuf_order","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.","state":0,"publishedAt":"2026-09-11T19:43:50.7+00:00","modifiedAt":"2026-10-19T08:47:53.802+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/trace/ring_buffer.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"f9b94daa542a8d2532f0930f01cd9aec2d19621b\",\n                            \"lessThan\": \"77275ccea06eaf297e8e6ac3fc830cb72086379a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f9b94daa542a8d2532f0930f01cd9aec2d19621b\",\n                            \"lessThan\": \"8c1ecdcdea738efe0494af908f12c0ae3a97fffa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f9b94daa542a8d2532f0930f01cd9aec2d19621b\",\n                            \"lessThan\": \"81063bbb16c4fcf0136c9117d5e49d3621dd6a1e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f9b94daa542a8d2532f0930f01cd9aec2d19621b\",\n                            \"lessThan\": \"234b1a72e9706fe20c08c96f4374ec8e83b934cb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/trace/ring_buffer.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/77275ccea06eaf297e8e6ac3fc830cb72086379a","https://git.kernel.org/stable/c/8c1ecdcdea738efe0494af908f12c0ae3a97fffa","https://git.kernel.org/stable/c/81063bbb16c4fcf0136c9117d5e49d3621dd6a1e","https://git.kernel.org/stable/c/234b1a72e9706fe20c08c96f4374ec8e83b934cb"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89502","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89502","identifiers":["CVE-2026-89502"]},"retained":false,"historicalAffected":[]}],"coverage":[]}