{"id":"CVE-2026-72309","state":"PUBLISHED","title":"tracing/remotes: Fix leak in trace_remote_alloc_buffer() error path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/remotes: Fix leak in trace_remote_alloc_buffer() error path\n\nIf page allocation fails in trace_remote_alloc_buffer(), desc->nr_cpus\nis not yet incremented for the current CPU. As a consequence, on error,\nhalf-allocated rb_desc will not be freed in trace_remote_free_buffer().\n\nIncrement desc->nr_cpus as soon as the first allocation for the current\nCPU has succeeded.","publishedAt":"2026-08-15T05:55:25.914Z","updatedAt":"2026-08-17T05:12:13.994Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"96e43537af5461b26f50904c6055046ba65d742f","status":"affected","lessThan":"81a7b7ddb07efdd8cf30eac6def18b9289b8de1e","versionType":"git"},{"version":"96e43537af5461b26f50904c6055046ba65d742f","status":"affected","lessThan":"ec082d0b978b5fb4c11205ccce63587ac94c74e1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_remote.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_remote.c"]}],"references":["https://git.kernel.org/stable/c/81a7b7ddb07efdd8cf30eac6def18b9289b8de1e","https://git.kernel.org/stable/c/ec082d0b978b5fb4c11205ccce63587ac94c74e1"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72309.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72309","state":"PUBLISHED","datePublished":"2026-08-15T05:55:25.914Z","dateUpdated":"2026-08-17T05:12:13.994Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.918Z"},"containers":{"cna":{"title":"tracing/remotes: Fix leak in trace_remote_alloc_buffer() error path","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/remotes: Fix leak in trace_remote_alloc_buffer() error path\n\nIf page allocation fails in trace_remote_alloc_buffer(), desc->nr_cpus\nis not yet incremented for the current CPU. As a consequence, on error,\nhalf-allocated rb_desc will not be freed in trace_remote_free_buffer().\n\nIncrement desc->nr_cpus as soon as the first allocation for the current\nCPU has succeeded."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"96e43537af5461b26f50904c6055046ba65d742f","status":"affected","lessThan":"81a7b7ddb07efdd8cf30eac6def18b9289b8de1e","versionType":"git"},{"version":"96e43537af5461b26f50904c6055046ba65d742f","status":"affected","lessThan":"ec082d0b978b5fb4c11205ccce63587ac94c74e1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_remote.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_remote.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/81a7b7ddb07efdd8cf30eac6def18b9289b8de1e"},{"url":"https://git.kernel.org/stable/c/ec082d0b978b5fb4c11205ccce63587ac94c74e1"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:12:13.994Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}