{"api_version":"1","generated_at":"2026-10-01T19:17:13+00:00","cve":"CVE-2026-98032","urls":{"html":"https://cve.report/CVE-2026-98032","api":"https://cve.report/api/cve/CVE-2026-98032.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98032","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98032"},"summary":{"title":"tracing: Fix subbuf resize races with trace_pipe_raw readers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix subbuf resize races with trace_pipe_raw readers\n\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace due to stale size values.\n\nModify ring_buffer_alloc_read_page() to handle the resizing of an\nexisting buffer_data_read_page if necessary and add a new\nring_buffer_read_page_size(). This new function enables ring-buffer\nbuffer_data_read_page users to not call the racy\nring_buffer_subbuf_size_get(). This makes the spare_size member of\nftrace_buffer_info redundant.\n\nFinally, handle buffer_data_read_page/reader_page order discrepancy in\nring_buffer_read_page(). On a mismatch simply copy manually the data to\nthe buffer_data_read_page.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:31","updated_at":"2026-09-25 11:17:31"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/dae8dda341d2d9034a90d59e8a7d502e1263813f","name":"https://git.kernel.org/stable/c/dae8dda341d2d9034a90d59e8a7d502e1263813f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/75b37b8369778b69ce9738d1c97685a1615cb252","name":"https://git.kernel.org/stable/c/75b37b8369778b69ce9738d1c97685a1615cb252","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98032","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98032","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bce761d757452ba5eb77e11fecc37a04b67494e7 75b37b8369778b69ce9738d1c97685a1615cb252 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bce761d757452ba5eb77e11fecc37a04b67494e7 dae8dda341d2d9034a90d59e8a7d502e1263813f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98032","cve":"CVE-2026-98032","epss":"0.001550000","percentile":"0.039760000","score_date":"2026-09-27","updated_at":"2026-09-28 00:02:24"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/linux/ring_buffer.h","kernel/trace/ring_buffer.c","kernel/trace/ring_buffer_benchmark.c","kernel/trace/trace.c","kernel/trace/trace.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"75b37b8369778b69ce9738d1c97685a1615cb252","status":"affected","version":"bce761d757452ba5eb77e11fecc37a04b67494e7","versionType":"git"},{"lessThan":"dae8dda341d2d9034a90d59e8a7d502e1263813f","status":"affected","version":"bce761d757452ba5eb77e11fecc37a04b67494e7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/linux/ring_buffer.h","kernel/trace/ring_buffer.c","kernel/trace/ring_buffer_benchmark.c","kernel/trace/trace.c","kernel/trace/trace.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.8"},{"lessThan":"6.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"6.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc2","versionStartIncluding":"6.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix subbuf resize races with trace_pipe_raw readers\n\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace due to stale size values.\n\nModify ring_buffer_alloc_read_page() to handle the resizing of an\nexisting buffer_data_read_page if necessary and add a new\nring_buffer_read_page_size(). This new function enables ring-buffer\nbuffer_data_read_page users to not call the racy\nring_buffer_subbuf_size_get(). This makes the spare_size member of\nftrace_buffer_info redundant.\n\nFinally, handle buffer_data_read_page/reader_page order discrepancy in\nring_buffer_read_page(). On a mismatch simply copy manually the data to\nthe buffer_data_read_page."}],"providerMetadata":{"dateUpdated":"2026-09-25T10:23:48.169Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/75b37b8369778b69ce9738d1c97685a1615cb252"},{"url":"https://git.kernel.org/stable/c/dae8dda341d2d9034a90d59e8a7d502e1263813f"}],"title":"tracing: Fix subbuf resize races with trace_pipe_raw readers","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98032","datePublished":"2026-09-25T10:23:48.169Z","dateReserved":"2026-09-25T10:19:56.070Z","dateUpdated":"2026-09-25T10:23:48.169Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:31","lastModifiedDate":"2026-09-25 11:17:31","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98032","Ordinal":"1","Title":"tracing: Fix subbuf resize races with trace_pipe_raw readers","CVE":"CVE-2026-98032","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98032","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix subbuf resize races with trace_pipe_raw readers\n\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace due to stale size values.\n\nModify ring_buffer_alloc_read_page() to handle the resizing of an\nexisting buffer_data_read_page if necessary and add a new\nring_buffer_read_page_size(). This new function enables ring-buffer\nbuffer_data_read_page users to not call the racy\nring_buffer_subbuf_size_get(). This makes the spare_size member of\nftrace_buffer_info redundant.\n\nFinally, handle buffer_data_read_page/reader_page order discrepancy in\nring_buffer_read_page(). On a mismatch simply copy manually the data to\nthe buffer_data_read_page.","Type":"Description","Title":"tracing: Fix subbuf resize races with trace_pipe_raw readers"}]}}}