{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74602","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.919Z","datePublished":"2026-08-22T15:31:50.811Z","dateUpdated":"2026-08-23T12:47:43.108Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-23T12:47:43.108Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()\n\nIn rb_allocate_cpu_buffer(), bpage->order was omitted, leaving it as 0.\nThis is an issue for a ring-buffer with subbufs bigger than PAGE_SIZE if\nwhen freed: free_buffer_page() relies on this value. Align the value\nwith the actual allocation size (buffer::subbuf_order)."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/ring_buffer.c"],"versions":[{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","lessThan":"7c620d89bae1a926ab7d626600285d3516c9f3c4","status":"affected","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","lessThan":"2e37f2bf111429fbfa4d985b12df3ba496ca70aa","status":"affected","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","lessThan":"3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a","status":"affected","versionType":"git"},{"version":"f9b94daa542a8d2532f0930f01cd9aec2d19621b","lessThan":"6d014e44b68ddd43f71288d2a4dbb1a259869149","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/ring_buffer.c"],"versions":[{"version":"6.8","status":"affected"},{"version":"0","lessThan":"6.8","status":"unaffected","versionType":"semver"},{"version":"6.12.105","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.45","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.9","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"6.8","versionEndExcluding":"6.12.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.18.45"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.1.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/7c620d89bae1a926ab7d626600285d3516c9f3c4"},{"url":"https://git.kernel.org/stable/c/2e37f2bf111429fbfa4d985b12df3ba496ca70aa"},{"url":"https://git.kernel.org/stable/c/3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771a"},{"url":"https://git.kernel.org/stable/c/6d014e44b68ddd43f71288d2a4dbb1a259869149"}],"title":"ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()","x_generator":{"engine":"bippy-1.2.0"}}}}