{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2022-2503", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "assignerShortName": "Google", "dateUpdated": "2024-08-03T00:39:07.939Z", "dateReserved": "2022-07-21T00:00:00", "datePublished": "2022-08-12T00:00:00"}, "containers": {"cna": {"title": "Linux Kernel LoadPin bypass via dm-verity table reload", "providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2023-02-14T00:00:00"}, "descriptions": [{"lang": "en", "value": "Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5"}], "affected": [{"vendor": "Linux Kernel", "product": "Linux Kernel", "versions": [{"version": "unspecified", "lessThan": "4caae58406f8ceb741603eee460d79bacca9b1b5", "status": "affected", "versionType": "custom"}]}], "references": [{"url": "https://github.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63m"}, {"url": "https://security.netapp.com/advisory/ntap-20230214-0005/"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-302 Authentication Bypass by Assumed-Immutable Data", "cweId": "CWE-302"}]}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "source": {"discovery": "INTERNAL"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T00:39:07.939Z"}, "title": "CVE Program Container", "references": [{"url": "https://github.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63m", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20230214-0005/", "tags": ["x_transferred"]}]}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E74E9AF8-BDF5-4917-A9CA-0AAD8E13149B", "versionEndExcluding": "5.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5"}, {"lang": "es", "value": "Dm-verity es usado para extender el root confiable a los sistemas de archivos root. LoadPin es basado en esta propiedad para restringir las cargas de m\u00f3dulos/firmware s\u00f3lo al sistema de archivos root confiables. Las recargas de la tabla del mapeador de dispositivos actualmente permiten a usuarios privilegiados de root cambiar el objetivo por un objetivo dm-lineal equivalente y evitar la verificaci\u00f3n hasta el reinicio. Esto permite a root omitir LoadPin y puede ser usado para cargar m\u00f3dulos del kernel y firmware no confiables y no verificados, lo que implica una ejecuci\u00f3n arbitraria del kernel y la persistencia de los perif\u00e9ricos que no verifican las actualizaciones del firmware. Es recomendado actualizar el commit 4caae58406f8ceb741603eee460d79bacca9b1b5"}], "id": "CVE-2022-2503", "lastModified": "2023-02-14T13:15:10.920", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 0.6, "impactScore": 5.8, "source": "cve-coordination@google.com", "type": "Secondary"}]}, "published": "2022-08-12T11:15:07.933", "references": [{"source": "cve-coordination@google.com", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://github.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63m"}, {"source": "cve-coordination@google.com", "url": "https://security.netapp.com/advisory/ntap-20230214-0005/"}], "sourceIdentifier": "cve-coordination@google.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-302"}], "source": "cve-coordination@google.com", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2022:7444", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-425.3.1.rt7.213.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-11-08T00:00:00Z"}, {"advisory": "RHSA-2022:7683", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-425.3.1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-11-08T00:00:00Z"}, {"advisory": "RHSA-2023:5627", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "kernel-0:4.18.0-372.75.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-10-10T00:00:00Z"}, {"advisory": "RHSA-2022:8267", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.6.1.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:7933", "cpe": "cpe:/a:redhat:enterprise_linux:9::nfv", "package": "kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2022:8267", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-162.6.1.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2022-11-15T00:00:00Z"}, {"advisory": "RHSA-2023:5627", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "kernel-0:4.18.0-372.75.1.el8_6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-10-10T00:00:00Z"}], "bugzilla": {"description": "kernel: LoadPin bypass via dm-verity table reload", "id": "2177862", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2177862"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-288", "details": ["Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5", "A flaw was found in the Linux kernel. Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module and firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification until reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2022-2503", "package_state": [{"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": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2022-08-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-2503\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-2503\nhttps://github.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63m"], "statement": "Starting from the Red Hat Enterprise Linux version 8.7 the bug already fixed (by previous ticket https://bugzilla.redhat.com/show_bug.cgi?id=2012340).\nSimilar for the Red Hat Enterprise Linux version 9.1 it is already fixed (by the ticket https://bugzilla.redhat.com/show_bug.cgi?id=2090507).", "threat_severity": "Moderate", "upstream_fix": "Kernel 5.19 RC1"}