CVE-2026-98057

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98057", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.072Z", "datePublished": "2026-09-25T10:24:03.541Z", "dateUpdated": "2026-10-19T09:13:03.914Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:13:03.914Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta->nr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect."}], "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": "3ec743d558f111d8999aea24577ba66c65ee2eeb", "lessThan": "f0467190e6a9fc61e343c8064ef16aad513788c3", "status": "affected", "versionType": "git"}, {"version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32", "lessThan": "364a31052aa9ef91db137f82d797366007cd85b7", "status": "affected", "versionType": "git"}, {"version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32", "lessThan": "69d502457e3f76142f7fcf6e2625e80e0ce8a60f", "status": "affected", "versionType": "git"}, {"version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32", "lessThan": "6c001a62c34f13fe1c6a24304c289b387d9e697d", "status": "affected", "versionType": "git"}, {"version": "0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf", "status": "affected", "versionType": "git"}, {"version": "6.12.16", "lessThan": "6.12.111", "status": "affected", "versionType": "semver"}, {"version": "6.13.4", "lessThan": "6.14", "status": "affected", "versionType": "semver"}]}, {"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": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "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": "6.12.16", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3"}, {"url": "https://git.kernel.org/stable/c/364a31052aa9ef91db137f82d797366007cd85b7"}, {"url": "https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f"}, {"url": "https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d"}], "title": "ring-buffer: Add checking nr_subbufs to persistent ring buffer validation", "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": "f0467190e6a9fc61e343c8064ef16aad513788c3", "status": "affected", "version": "3ec743d558f111d8999aea24577ba66c65ee2eeb", "versionType": "git"}, {"lessThan": "364a31052aa9ef91db137f82d797366007cd85b7", "status": "affected", "version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32", "versionType": "git"}, {"lessThan": "69d502457e3f76142f7fcf6e2625e80e0ce8a60f", "status": "affected", "version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32", "versionType": "git"}, {"lessThan": "6c001a62c34f13fe1c6a24304c289b387d9e697d", "status": "affected", "version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32", "versionType": "git"}, {"status": "affected", "version": "0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf", "versionType": "git"}, {"lessThan": "6.12.111", "status": "affected", "version": "6.12.16", "versionType": "semver"}, {"lessThan": "6.14", "status": "affected", "version": "6.13.4", "versionType": "semver"}]}, {"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": "6.14"}, {"lessThan": "6.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "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\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta->nr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect."}], "id": "CVE-2026-98057", "lastModified": "2026-10-19T10:17:59.870", "metrics": {}, "published": "2026-09-25T11:17:34.660", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/364a31052aa9ef91db137f82d797366007cd85b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Undergoing Analysis"}

{"bugzilla": {"description": "kernel: ring-buffer: Add checking nr_subbufs to persistent ring buffer validation", "id": "2541162", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541162"}, "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-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\nSashiko reported that the code was using meta->nr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect.", "A flaw was found in the Linux kernel's tracing ring buffer. The persistent ring buffer validation logic fails to verify that the recorded sub-buffer count matches the expected page count in the metadata. A local attacker capable of manipulating persistent memory metadata could exploit this issue to induce out-of-bounds memory operations, potentially leading to memory corruption or a Denial of Service (DoS)."], "name": "CVE-2026-98057", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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"}, {"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-2026-98057\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98057\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98057.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ec743d558f111d8999aea24577ba66c65ee2eeb,f0467190e6a9fc61e343c8064ef16aad513788c3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b95f1fa2ef3a03f49eeec658ba97e721412b32,69d502457e3f76142f7fcf6e2625e80e0ce8a60f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[f5b95f1fa2ef3a03f49eeec658ba97e721412b32,6c001a62c34f13fe1c6a24304c289b387d9e697d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.16,6.12.111)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[6.13.4,6.14)"}}], "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": "6.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.111,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.7,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "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": "2026-09-25T16:30:15.788742+00:00", "updated": "2026-09-30T14:00:07.496255+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}