{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99160", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.397Z", "datePublished": "2026-10-28T10:35:13.341Z", "dateUpdated": "2026-10-28T10:35:13.341Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-28T10:35:13.341Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Do not show buffer_meta for CPUs without a buffer\n\nThe per_cpu/cpuN/buffer_meta files are created for every possible CPU,\nbut buffer->buffers[cpu] is only allocated once that CPU comes online.\nReading the file of a CPU that never came online dereferences a NULL\ncpu_buffer in rbm_start().\n\nFail the open with -ENODEV when the CPU has no buffer, as the other\nper CPU ring buffer interfaces do."}], "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": "950032ffcee7a43c960951940059afc5a2bdbcbc", "lessThan": "8512d0312cc0ea83ca4511b164c29a138bbb0c21", "status": "affected", "versionType": "git"}, {"version": "950032ffcee7a43c960951940059afc5a2bdbcbc", "lessThan": "ae670c1a24fb5ffb167f26358cf47a5f0abbd670", "status": "affected", "versionType": "git"}, {"version": "950032ffcee7a43c960951940059afc5a2bdbcbc", "lessThan": "3f23cae09a4677a3f7c163a68388512cb231ff22", "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": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.59", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.13", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.12", "versionEndExcluding": "6.18.59"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8512d0312cc0ea83ca4511b164c29a138bbb0c21"}, {"url": "https://git.kernel.org/stable/c/ae670c1a24fb5ffb167f26358cf47a5f0abbd670"}, {"url": "https://git.kernel.org/stable/c/3f23cae09a4677a3f7c163a68388512cb231ff22"}], "title": "ring-buffer: Do not show buffer_meta for CPUs without a buffer", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/trace/ring_buffer.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8512d0312cc0ea83ca4511b164c29a138bbb0c21", "status": "affected", "version": "950032ffcee7a43c960951940059afc5a2bdbcbc", "versionType": "git"}, {"lessThan": "ae670c1a24fb5ffb167f26358cf47a5f0abbd670", "status": "affected", "version": "950032ffcee7a43c960951940059afc5a2bdbcbc", "versionType": "git"}, {"lessThan": "3f23cae09a4677a3f7c163a68388512cb231ff22", "status": "affected", "version": "950032ffcee7a43c960951940059afc5a2bdbcbc", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/trace/ring_buffer.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.59", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nring-buffer: Do not show buffer_meta for CPUs without a buffer\n\nThe per_cpu/cpuN/buffer_meta files are created for every possible CPU,\nbut buffer->buffers[cpu] is only allocated once that CPU comes online.\nReading the file of a CPU that never came online dereferences a NULL\ncpu_buffer in rbm_start().\n\nFail the open with -ENODEV when the CPU has no buffer, as the other\nper CPU ring buffer interfaces do."}], "id": "CVE-2026-99160", "lastModified": "2026-10-28T11:17:36.277", "metrics": {}, "published": "2026-10-28T11:17:36.277", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3f23cae09a4677a3f7c163a68388512cb231ff22"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8512d0312cc0ea83ca4511b164c29a138bbb0c21"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ae670c1a24fb5ffb167f26358cf47a5f0abbd670"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[950032ffcee7a43c960951940059afc5a2bdbcbc,8512d0312cc0ea83ca4511b164c29a138bbb0c21)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[950032ffcee7a43c960951940059afc5a2bdbcbc,ae670c1a24fb5ffb167f26358cf47a5f0abbd670)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[950032ffcee7a43c960951940059afc5a2bdbcbc,3f23cae09a4677a3f7c163a68388512cb231ff22)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.59,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.13,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[950032ffcee7a43c960951940059afc5a2bdbcbc,8512d0312cc0ea83ca4511b164c29a138bbb0c21)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[950032ffcee7a43c960951940059afc5a2bdbcbc,ae670c1a24fb5ffb167f26358cf47a5f0abbd670)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[950032ffcee7a43c960951940059afc5a2bdbcbc,3f23cae09a4677a3f7c163a68388512cb231ff22)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"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": "6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.59,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.13,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-28T13:45:07.022541+00:00", "updated": "2026-10-28T14:00:17.410071+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-690"]}