CVE-2026-72309

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72309", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.918Z", "datePublished": "2026-08-15T05:55:25.914Z", "dateUpdated": "2026-08-17T05:12:13.994Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:12:13.994Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_remote.c"], "versions": [{"version": "96e43537af5461b26f50904c6055046ba65d742f", "lessThan": "81a7b7ddb07efdd8cf30eac6def18b9289b8de1e", "status": "affected", "versionType": "git"}, {"version": "96e43537af5461b26f50904c6055046ba65d742f", "lessThan": "ec082d0b978b5fb4c11205ccce63587ac94c74e1", "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_remote.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "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": "7.1", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/81a7b7ddb07efdd8cf30eac6def18b9289b8de1e"}, {"url": "https://git.kernel.org/stable/c/ec082d0b978b5fb4c11205ccce63587ac94c74e1"}], "title": "tracing/remotes: Fix leak in trace_remote_alloc_buffer() error path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/trace/trace_remote.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "81a7b7ddb07efdd8cf30eac6def18b9289b8de1e", "status": "affected", "version": "96e43537af5461b26f50904c6055046ba65d742f", "versionType": "git"}, {"lessThan": "ec082d0b978b5fb4c11205ccce63587ac94c74e1", "status": "affected", "version": "96e43537af5461b26f50904c6055046ba65d742f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/trace/trace_remote.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.1"}, {"lessThan": "7.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-72309", "lastModified": "2026-08-17T06:18:33.990", "metrics": {}, "published": "2026-08-15T06:22:03.673", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/81a7b7ddb07efdd8cf30eac6def18b9289b8de1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ec082d0b978b5fb4c11205ccce63587ac94c74e1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: tracing/remotes: Fix leak in trace_remote_alloc_buffer() error path", "id": "2516237", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516237"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-911", "details": ["A flaw was found in the Linux kernel's tracing/remotes component. This vulnerability occurs when a page allocation fails within the `trace_remote_alloc_buffer()` function. Due to an unincremented CPU counter, a partially allocated buffer descriptor (rb_desc) is not properly freed, leading to a memory leak. Over time, this memory leak could potentially lead to a Denial of Service (DoS) condition."], "name": "CVE-2026-72309", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72309\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72309\nhttps://lore.kernel.org/linux-cve-announce/2026081504-CVE-2026-72309-c118@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[96e43537af5461b26f50904c6055046ba65d742f,81a7b7ddb07efdd8cf30eac6def18b9289b8de1e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[96e43537af5461b26f50904c6055046ba65d742f,ec082d0b978b5fb4c11205ccce63587ac94c74e1)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,7.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T10:30:05.218568+00:00", "updated": "2026-08-18T02:45:03.564592+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}