CVE-2026-98032

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98032", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.070Z", "datePublished": "2026-09-25T10:23:48.169Z", "dateUpdated": "2026-10-21T12:54:06.279Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:54:06.279Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix subbuf resize races with trace_pipe_raw readers\n\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace due to stale size values.\n\nModify ring_buffer_alloc_read_page() to handle the resizing of an\nexisting buffer_data_read_page if necessary and add a new\nring_buffer_read_page_size(). This new function enables ring-buffer\nbuffer_data_read_page users to not call the racy\nring_buffer_subbuf_size_get(). This makes the spare_size member of\nftrace_buffer_info redundant.\n\nFinally, handle buffer_data_read_page/reader_page order discrepancy in\nring_buffer_read_page(). On a mismatch simply copy manually the data to\nthe buffer_data_read_page."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/ring_buffer.h", "kernel/trace/ring_buffer.c", "kernel/trace/ring_buffer_benchmark.c", "kernel/trace/trace.c", "kernel/trace/trace.h"], "versions": [{"version": "bce761d757452ba5eb77e11fecc37a04b67494e7", "lessThan": "574efd988d116bd56ac688ab2d64e06ba0da982a", "status": "affected", "versionType": "git"}, {"version": "bce761d757452ba5eb77e11fecc37a04b67494e7", "lessThan": "3f30b2cd4eba45c05f822f03f1b0f4077d6d4dc3", "status": "affected", "versionType": "git"}, {"version": "bce761d757452ba5eb77e11fecc37a04b67494e7", "lessThan": "75b37b8369778b69ce9738d1c97685a1615cb252", "status": "affected", "versionType": "git"}, {"version": "bce761d757452ba5eb77e11fecc37a04b67494e7", "lessThan": "dae8dda341d2d9034a90d59e8a7d502e1263813f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/linux/ring_buffer.h", "kernel/trace/ring_buffer.c", "kernel/trace/ring_buffer_benchmark.c", "kernel/trace/trace.c", "kernel/trace/trace.h"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "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": "6.8", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/574efd988d116bd56ac688ab2d64e06ba0da982a"}, {"url": "https://git.kernel.org/stable/c/3f30b2cd4eba45c05f822f03f1b0f4077d6d4dc3"}, {"url": "https://git.kernel.org/stable/c/75b37b8369778b69ce9738d1c97685a1615cb252"}, {"url": "https://git.kernel.org/stable/c/dae8dda341d2d9034a90d59e8a7d502e1263813f"}], "title": "tracing: Fix subbuf resize races with trace_pipe_raw readers", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["include/linux/ring_buffer.h", "kernel/trace/ring_buffer.c", "kernel/trace/ring_buffer_benchmark.c", "kernel/trace/trace.c", "kernel/trace/trace.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "574efd988d116bd56ac688ab2d64e06ba0da982a", "status": "affected", "version": "bce761d757452ba5eb77e11fecc37a04b67494e7", "versionType": "git"}, {"lessThan": "3f30b2cd4eba45c05f822f03f1b0f4077d6d4dc3", "status": "affected", "version": "bce761d757452ba5eb77e11fecc37a04b67494e7", "versionType": "git"}, {"lessThan": "75b37b8369778b69ce9738d1c97685a1615cb252", "status": "affected", "version": "bce761d757452ba5eb77e11fecc37a04b67494e7", "versionType": "git"}, {"lessThan": "dae8dda341d2d9034a90d59e8a7d502e1263813f", "status": "affected", "version": "bce761d757452ba5eb77e11fecc37a04b67494e7", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["include/linux/ring_buffer.h", "kernel/trace/ring_buffer.c", "kernel/trace/ring_buffer_benchmark.c", "kernel/trace/trace.c", "kernel/trace/trace.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"lessThan": "6.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "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\ntracing: Fix subbuf resize races with trace_pipe_raw readers\n\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace due to stale size values.\n\nModify ring_buffer_alloc_read_page() to handle the resizing of an\nexisting buffer_data_read_page if necessary and add a new\nring_buffer_read_page_size(). This new function enables ring-buffer\nbuffer_data_read_page users to not call the racy\nring_buffer_subbuf_size_get(). This makes the spare_size member of\nftrace_buffer_info redundant.\n\nFinally, handle buffer_data_read_page/reader_page order discrepancy in\nring_buffer_read_page(). On a mismatch simply copy manually the data to\nthe buffer_data_read_page."}], "id": "CVE-2026-98032", "lastModified": "2026-10-21T13:21:19.397", "metrics": {}, "published": "2026-09-25T11:17:31.900", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3f30b2cd4eba45c05f822f03f1b0f4077d6d4dc3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/574efd988d116bd56ac688ab2d64e06ba0da982a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/75b37b8369778b69ce9738d1c97685a1615cb252"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dae8dda341d2d9034a90d59e8a7d502e1263813f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: tracing: Fix subbuf resize races with trace_pipe_raw readers", "id": "2541263", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541263"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-366", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntracing: Fix subbuf resize races with trace_pipe_raw readers\nConcurrent subbuffer resizes may crash trace_pipe_raw readers or leak\nuninitialized memory to userspace due to stale size values.\nModify ring_buffer_alloc_read_page() to handle the resizing of an\nexisting buffer_data_read_page if necessary and add a new\nring_buffer_read_page_size(). This new function enables ring-buffer\nbuffer_data_read_page users to not call the racy\nring_buffer_subbuf_size_get(). This makes the spare_size member of\nftrace_buffer_info redundant.\nFinally, handle buffer_data_read_page/reader_page order discrepancy in\nring_buffer_read_page(). On a mismatch simply copy manually the data to\nthe buffer_data_read_page.", "A flaw was found in the Linux kernel's tracing subsystem. A race condition occurs when concurrent subbuffer resizing takes place while raw trace data is being read. A local user could exploit this flaw to cause a Denial of Service (DoS) or disclose uninitialized kernel memory due to stale buffer size values."], "name": "CVE-2026-98032", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98032\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98032\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98032.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bce761d757452ba5eb77e11fecc37a04b67494e7,75b37b8369778b69ce9738d1c97685a1615cb252)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bce761d757452ba5eb77e11fecc37a04b67494e7,dae8dda341d2d9034a90d59e8a7d502e1263813f)"}}], "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": "6.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc2,*]"}}], "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": "2026-09-25T15:15:14.510452+00:00", "updated": "2026-09-30T14:15:16.120680+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}