{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-50230", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-06-18T10:57:27.432Z", "datePublished": "2025-06-18T11:04:06.716Z", "dateUpdated": "2026-05-11T19:15:19.620Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:15:19.620Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: set UXN on swapper page tables\n\n[ This issue was fixed upstream by accident in c3cee924bd85 (\"arm64:\n head: cover entire kernel image in initial ID map\") as part of a\n large refactoring of the arm64 boot flow. This simple fix is therefore\n preferred for -stable backporting ]\n\nOn a system that implements FEAT_EPAN, read/write access to the idmap\nis denied because UXN is not set on the swapper PTEs. As a result,\nidmap_kpti_install_ng_mappings panics the kernel when accessing\n__idmap_kpti_flag. Fix it by setting UXN on these PTEs."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/include/asm/kernel-pgtable.h", "arch/arm64/kernel/head.S"], "versions": [{"version": "18107f8a2df6bf1c6cac8d0713f757f866d5af51", "lessThan": "9283e708a9b8529e7aafac9ab5c5c79a9fab8846", "status": "affected", "versionType": "git"}, {"version": "18107f8a2df6bf1c6cac8d0713f757f866d5af51", "lessThan": "c3cee924bd855184d15bc4aa6088dcf8e2c1394c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/arm64/include/asm/kernel-pgtable.h", "arch/arm64/kernel/head.S"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.19.1", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0", "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": "5.13", "versionEndExcluding": "5.19.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9283e708a9b8529e7aafac9ab5c5c79a9fab8846"}, {"url": "https://git.kernel.org/stable/c/c3cee924bd855184d15bc4aa6088dcf8e2c1394c"}], "title": "arm64: set UXN on swapper page tables", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "52E5D9CF-2FE0-473C-B168-062DD8BF64D2", "versionEndExcluding": "5.19.1", "versionStartIncluding": "5.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: set UXN on swapper page tables\n\n[ This issue was fixed upstream by accident in c3cee924bd85 (\"arm64:\n head: cover entire kernel image in initial ID map\") as part of a\n large refactoring of the arm64 boot flow. This simple fix is therefore\n preferred for -stable backporting ]\n\nOn a system that implements FEAT_EPAN, read/write access to the idmap\nis denied because UXN is not set on the swapper PTEs. As a result,\nidmap_kpti_install_ng_mappings panics the kernel when accessing\n__idmap_kpti_flag. Fix it by setting UXN on these PTEs."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: arm64: establecer UXN en las tablas de p\u00e1ginas del intercambiador [Este problema se corrigi\u00f3 accidentalmente en c3cee924bd85 (\"arm64: head: cubrir toda la imagen del kernel en el mapa de ID inicial\") como parte de una refactorizaci\u00f3n a gran escala del flujo de arranque de arm64. Por lo tanto, esta sencilla soluci\u00f3n es la preferida para la retroportaci\u00f3n de -stable]. En un sistema que implementa FEAT_EPAN, se deniega el acceso de lectura/escritura al mapa de ID porque UXN no est\u00e1 establecido en las PTE del intercambiador. Como resultado, idmap_kpti_install_ng_mappings genera un p\u00e1nico en el kernel al acceder a __idmap_kpti_flag. Se soluciona estableciendo UXN en estas PTE."}], "id": "CVE-2022-50230", "lastModified": "2025-11-19T12:57:34.460", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-06-18T11:15:54.083", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9283e708a9b8529e7aafac9ab5c5c79a9fab8846"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c3cee924bd855184d15bc4aa6088dcf8e2c1394c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: arm64: set UXN on swapper page tables", "id": "2373642", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373642"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\narm64: set UXN on swapper page tables\n[ This issue was fixed upstream by accident in c3cee924bd85 (\"arm64:\nhead: cover entire kernel image in initial ID map\") as part of a\nlarge refactoring of the arm64 boot flow. This simple fix is therefore\npreferred for -stable backporting ]\nOn a system that implements FEAT_EPAN, read/write access to the idmap\nis denied because UXN is not set on the swapper PTEs. As a result,\nidmap_kpti_install_ng_mappings panics the kernel when accessing\n__idmap_kpti_flag. Fix it by setting UXN on these PTEs."], "name": "CVE-2022-50230", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "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": "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"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50230\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50230\nhttps://lore.kernel.org/linux-cve-announce/2025061850-CVE-2022-50230-034a@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-06-23T08:36:34.114589+00:00", "updated": "2025-06-23T08:36:34.114635+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}