{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68329","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-16T14:48:05.296Z","datePublished":"2025-12-22T16:12:23.133Z","dateUpdated":"2026-05-11T21:51:04.994Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:51:04.994Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix WARN_ON in tracing_buffers_mmap_close for split VMAs\n\nWhen a VMA is split (e.g., by partial munmap or MAP_FIXED), the kernel\ncalls vm_ops->close on each portion. For trace buffer mappings, this\nresults in ring_buffer_unmap() being called multiple times while\nring_buffer_map() was only called once.\n\nThis causes ring_buffer_unmap() to return -ENODEV on subsequent calls\nbecause user_mapped is already 0, triggering a WARN_ON.\n\nTrace buffer mappings cannot support partial mappings because the ring\nbuffer structure requires the complete buffer including the meta page.\n\nFix this by adding a may_split callback that returns -EINVAL to prevent\nVMA splits entirely."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace.c"],"versions":[{"version":"cf9f0f7c4c5bb45e7bb270e48bab6f7837825a64","lessThan":"922fdd0b755a84f9933b3ca195f60092b6bb88ee","status":"affected","versionType":"git"},{"version":"cf9f0f7c4c5bb45e7bb270e48bab6f7837825a64","lessThan":"45053c12c45f0fb8ef6ab95118dd928d2fec0255","status":"affected","versionType":"git"},{"version":"cf9f0f7c4c5bb45e7bb270e48bab6f7837825a64","lessThan":"b042fdf18e89a347177a49e795d8e5184778b5b6","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace.c"],"versions":[{"version":"6.10","status":"affected"},{"version":"0","lessThan":"6.10","status":"unaffected","versionType":"semver"},{"version":"6.12.61","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.17.11","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.12.61"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.17.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10","versionEndExcluding":"6.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/922fdd0b755a84f9933b3ca195f60092b6bb88ee"},{"url":"https://git.kernel.org/stable/c/45053c12c45f0fb8ef6ab95118dd928d2fec0255"},{"url":"https://git.kernel.org/stable/c/b042fdf18e89a347177a49e795d8e5184778b5b6"}],"title":"tracing: Fix WARN_ON in tracing_buffers_mmap_close for split VMAs","x_generator":{"engine":"bippy-1.2.0"}}}}