CVE-2026-98019

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98019", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.069Z", "datePublished": "2026-09-25T10:23:40.303Z", "dateUpdated": "2026-10-21T12:54:04.100Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:54:04.100Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: mark a NULL call argument precise\n\ncheck_func_arg() allows bpf_register_is_null() for nullable arguments\nw/o marking the underlying scalar register precise. Hence a checkpoint\ncreated on such a path would prune against arbitrary scalar value.\n\ncheck_helper_call() enforces second parameter of the\nbpf_get_local_storage() to be zero, w/o marking the underlying scalar\nregister precise. Hence a checkpoint created on such a path would\nprune against arbitrary scalar value.\n\nGrouping these two into one patch, as they share the same fixes tag."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/bpf/verifier.c", "tools/testing/selftests/bpf/progs/verifier_subprog_precision.c"], "versions": [{"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "lessThan": "febbb66e682d8328f7c5bcbdd5e4291abab2e858", "status": "affected", "versionType": "git"}, {"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "lessThan": "627089c278df58749f25686c6a3caf7e181b5951", "status": "affected", "versionType": "git"}, {"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "lessThan": "b1fe6379e401b8ce0f561cb4d84af2b70b4343c3", "status": "affected", "versionType": "git"}, {"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "lessThan": "69a9ad004ccf5d45e534c7d503f47f643abe64b7", "status": "affected", "versionType": "git"}, {"version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "lessThan": "1a3a10b030c96ea88868ccc060a16827c01eaa5a", "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/bpf/verifier.c", "tools/testing/selftests/bpf/progs/verifier_subprog_precision.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "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": "5.3", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/febbb66e682d8328f7c5bcbdd5e4291abab2e858"}, {"url": "https://git.kernel.org/stable/c/627089c278df58749f25686c6a3caf7e181b5951"}, {"url": "https://git.kernel.org/stable/c/b1fe6379e401b8ce0f561cb4d84af2b70b4343c3"}, {"url": "https://git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7"}, {"url": "https://git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a"}], "title": "bpf: mark a NULL call argument precise", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/bpf/verifier.c", "tools/testing/selftests/bpf/progs/verifier_subprog_precision.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "febbb66e682d8328f7c5bcbdd5e4291abab2e858", "status": "affected", "version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "versionType": "git"}, {"lessThan": "627089c278df58749f25686c6a3caf7e181b5951", "status": "affected", "version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "versionType": "git"}, {"lessThan": "b1fe6379e401b8ce0f561cb4d84af2b70b4343c3", "status": "affected", "version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "versionType": "git"}, {"lessThan": "69a9ad004ccf5d45e534c7d503f47f643abe64b7", "status": "affected", "version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "versionType": "git"}, {"lessThan": "1a3a10b030c96ea88868ccc060a16827c01eaa5a", "status": "affected", "version": "b5dc0163d8fd78e64a7e21f309cf932fda34353e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/bpf/verifier.c", "tools/testing/selftests/bpf/progs/verifier_subprog_precision.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"lessThan": "5.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "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\nbpf: mark a NULL call argument precise\n\ncheck_func_arg() allows bpf_register_is_null() for nullable arguments\nw/o marking the underlying scalar register precise. Hence a checkpoint\ncreated on such a path would prune against arbitrary scalar value.\n\ncheck_helper_call() enforces second parameter of the\nbpf_get_local_storage() to be zero, w/o marking the underlying scalar\nregister precise. Hence a checkpoint created on such a path would\nprune against arbitrary scalar value.\n\nGrouping these two into one patch, as they share the same fixes tag."}], "id": "CVE-2026-98019", "lastModified": "2026-10-21T13:21:19.180", "metrics": {}, "published": "2026-09-25T11:17:30.363", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1a3a10b030c96ea88868ccc060a16827c01eaa5a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/627089c278df58749f25686c6a3caf7e181b5951"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/69a9ad004ccf5d45e534c7d503f47f643abe64b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b1fe6379e401b8ce0f561cb4d84af2b70b4343c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/febbb66e682d8328f7c5bcbdd5e4291abab2e858"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: bpf: mark a NULL call argument precise", "id": "2541052", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541052"}, "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-1025", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: mark a NULL call argument precise\ncheck_func_arg() allows bpf_register_is_null() for nullable arguments\nw/o marking the underlying scalar register precise. Hence a checkpoint\ncreated on such a path would prune against arbitrary scalar value.\ncheck_helper_call() enforces second parameter of the\nbpf_get_local_storage() to be zero, w/o marking the underlying scalar\nregister precise. Hence a checkpoint created on such a path would\nprune against arbitrary scalar value.\nGrouping these two into one patch, as they share the same fixes tag.", "A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) verifier. The verifier failed to mark scalar registers as precise when checking null function arguments and specific helper call parameters, causing its state-tracking logic to improperly prune verification paths. A local attacker with permission to load BPF programs could exploit this flaw using a specially crafted program to bypass safety checks, potentially leading to privilege escalation or a denial of service."], "name": "CVE-2026-98019", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "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-2026-98019\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98019\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98019.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b5dc0163d8fd78e64a7e21f309cf932fda34353e,69a9ad004ccf5d45e534c7d503f47f643abe64b7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b5dc0163d8fd78e64a7e21f309cf932fda34353e,1a3a10b030c96ea88868ccc060a16827c01eaa5a)"}}], "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": "5.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"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": "2026-09-25T18:15:16.266114+00:00", "updated": "2026-10-01T01:45:16.944380+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-1025"]}