{"id":"CVE-2026-89502","state":"PUBLISHED","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.","publishedAt":"2026-09-11T19:43:50.700Z","updatedAt":"2026-10-19T08:47:53.802Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","status":"affected","lessThan":"77275ccea06eaf297e8e6ac3fc830cb72086379a","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","status":"affected","lessThan":"8c1ecdcdea738efe0494af908f12c0ae3a97fffa","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","status":"affected","lessThan":"81063bbb16c4fcf0136c9117d5e49d3621dd6a1e","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","status":"affected","lessThan":"234b1a72e9706fe20c08c96f4374ec8e83b934cb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/ring_buffer.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/ring_buffer.c"]}],"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"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89502.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89502","state":"PUBLISHED","datePublished":"2026-09-11T19:43:50.700Z","dateUpdated":"2026-10-19T08:47:53.802Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.715Z"},"containers":{"cna":{"title":"ring-buffer: Free cpu_buffer::free_page with subbuf_order","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","status":"affected","lessThan":"77275ccea06eaf297e8e6ac3fc830cb72086379a","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","status":"affected","lessThan":"8c1ecdcdea738efe0494af908f12c0ae3a97fffa","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","status":"affected","lessThan":"81063bbb16c4fcf0136c9117d5e49d3621dd6a1e","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","status":"affected","lessThan":"234b1a72e9706fe20c08c96f4374ec8e83b934cb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/ring_buffer.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/ring_buffer.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/77275ccea06eaf297e8e6ac3fc830cb72086379a"},{"url":"https://git.kernel.org/stable/c/8c1ecdcdea738efe0494af908f12c0ae3a97fffa"},{"url":"https://git.kernel.org/stable/c/81063bbb16c4fcf0136c9117d5e49d3621dd6a1e"},{"url":"https://git.kernel.org/stable/c/234b1a72e9706fe20c08c96f4374ec8e83b934cb"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:47:53.802Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}