{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-4244", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "state": "PUBLISHED", "assignerShortName": "Google", "dateReserved": "2023-08-08T15:36:07.559Z", "datePublished": "2023-09-06T13:53:24.873Z", "dateUpdated": "2025-02-13T17:09:20.006Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2024-01-11T19:06:33.395Z"}, "title": "Use-after-free in Linux kernel's netfilter: nf_tables component", "datePublic": "2023-08-10T17:47:08.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-416", "description": "CWE-416 Use After Free", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-233", "descriptions": [{"lang": "en", "value": "CAPEC-233 Privilege Escalation"}]}], "affected": [{"vendor": "Linux", "product": "Kernel", "packageName": "kernel", "repo": "https://git.kernel.org", "versions": [{"status": "affected", "version": "0.0", "lessThan": "6.5", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.\n\nDue to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.\n\nWe recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8."}], "references": [{"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8", "tags": ["patch"]}, {"url": "https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8"}, {"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}], "credits": [{"lang": "en", "value": "Bien Pham from Team Orca of Sea Security Team", "user": "00000000-0000-4000-9000-000000000000", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T07:24:03.697Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8", "tags": ["patch", "x_transferred"]}, {"url": "https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html", "tags": ["x_transferred"]}]}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "98C491C7-598A-4D36-BA4F-3505A5727ED1", "versionEndExcluding": "6.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.\n\nDue to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.\n\nWe recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8."}, {"lang": "es", "value": "Una vulnerabilidad de use-after-free en el netfilter del kernel de Linux: nf_tables componente puede ser explotado para lograr la escalada de privilegios locales. Debido a una condici\u00f3n de ejecuci\u00f3n entre nf_tables transacci\u00f3n del plano de control de enlace de red y la recolecci\u00f3n de elementos no utilizados de nft_set, es posible desbordar el contador de referencia causando una vulnerabilidad de use-after-free. Recomendamos actualizar al commit anterior 3e91b0ebd994635df2346353322ac51ce84ce6d8."}], "id": "CVE-2023-4244", "lastModified": "2025-02-13T17:17:16.750", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "cve-coordination@google.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-09-06T14:15:11.877", "references": [{"source": "cve-coordination@google.com", "tags": ["Issue Tracking", "Mailing List", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8"}, {"source": "cve-coordination@google.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8"}, {"source": "cve-coordination@google.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"}, {"source": "cve-coordination@google.com", "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Mailing List", "Patch", "Vendor Advisory"], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"}], "sourceIdentifier": "cve-coordination@google.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "cve-coordination@google.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Bien Pham (https://sea.com) (Team Orca of Sea Security Team) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2024:2950", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.rt7.342.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-05-22T00:00:00Z"}, {"advisory": "RHSA-2024:3138", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-05-22T00:00:00Z"}, {"advisory": "RHSA-2024:1248", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.24.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-03-12T00:00:00Z"}, {"advisory": "RHSA-2024:1248", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-362.24.1.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-03-12T00:00:00Z"}, {"advisory": "RHSA-2024:3421", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "kernel-0:5.14.0-70.101.1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2024-05-28T00:00:00Z"}, {"advisory": "RHSA-2024:3414", "cpe": "cpe:/a:redhat:rhel_eus:9.0::nfv", "package": "kernel-rt-0:5.14.0-70.101.1.rt21.173.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2024-05-28T00:00:00Z"}, {"advisory": "RHSA-2024:1018", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.55.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-02-28T00:00:00Z"}, {"advisory": "RHSA-2024:1019", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.55.1.rt14.340.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-02-28T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/cluster-logging-operator-bundle:v5.8.6-22", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/cluster-logging-rhel9-operator:v5.8.6-11", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/elasticsearch6-rhel9:v6.8.1-407", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/elasticsearch-operator-bundle:v5.8.6-19", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/elasticsearch-proxy-rhel9:v1.0.0-479", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/elasticsearch-rhel9-operator:v5.8.6-7", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/eventrouter-rhel9:v0.4.0-247", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/fluentd-rhel9:v5.8.6-5", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/log-file-metric-exporter-rhel9:v1.1.0-227", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/logging-curator5-rhel9:v5.8.1-470", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/logging-loki-rhel9:v2.9.6-14", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/logging-view-plugin-rhel9:v5.8.6-2", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/loki-operator-bundle:v5.8.6-24", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/loki-rhel9-operator:v5.8.6-10", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/lokistack-gateway-rhel9:v0.1.0-525", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/opa-openshift-rhel9:v0.1.0-224", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}, {"advisory": "RHSA-2024:2094", "cpe": "cpe:/a:redhat:logging:5.8::el9", "package": "openshift-logging/vector-rhel9:v0.28.1-56", "product_name": "RHOL-5.8-RHEL-9", "release_date": "2024-05-01T00:00:00Z"}], "bugzilla": {"description": "kernel: Use-after-free in nft_verdict_dump due to a race between set GC and transaction", "id": "2235306", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2235306"}, "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": "verified"}, "cwe": "CWE-416", "details": ["A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.\nDue to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.\nWe recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.", "A use-after-free flaw was found in the Linux kernel\u2019s nftables sub-component due to a race problem between the set GC and transaction in the Linux Kernel. This flaw allows a local attacker to crash the system due to a missing call to `nft_set_elem_mark_busy`, causing double deactivation of the element and possibly leading to a kernel information leak problem."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is to skip loading the affected module \"nftables\" onto the system till we have a fix available, this can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically?\nhttps://access.redhat.com/solutions/41278 \n~~~"}, "name": "CVE-2023-4244", "package_state": [{"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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2023-08-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-4244\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-4244\nhttps://lore.kernel.org/netdev/20230810070830.24064-1-pablo@netfilter.org/\nhttps://lore.kernel.org/netdev/20230815223011.7019-1-fw@strlen.de/"], "statement": "Exploiting this flaw will require CAP_NET_ADMIN access privilege in any user or network namespace.\nAnd,\nOn non-containerized deployments of Red Hat Enterprise Linux, you can disable user namespaces by setting user.max_user_namespaces to 0:\n$ echo \"user.max_user_namespaces=0\" > /etc/sysctl.d/userns.conf\n$ sysctl -p /etc/sysctl.d/userns.conf\nOn containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled.", "threat_severity": "Moderate"}