{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-21815", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.774Z", "datePublished": "2025-02-27T20:04:14.733Z", "dateUpdated": "2026-05-11T21:07:04.528Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:07:04.528Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/compaction: fix UBSAN shift-out-of-bounds warning\n\nsyzkaller reported a UBSAN shift-out-of-bounds warning of (1UL << order)\nin isolate_freepages_block(). The bogus compound_order can be any value\nbecause it is union with flags. Add back the MAX_PAGE_ORDER check to fix\nthe warning."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/compaction.c"], "versions": [{"version": "3da0272a4c7d0d37b47b28e87014f421296fc2be", "lessThan": "4491159774d973a9e2e998d25d8fbb20fada6dfa", "status": "affected", "versionType": "git"}, {"version": "3da0272a4c7d0d37b47b28e87014f421296fc2be", "lessThan": "10b7d3eb535098ccd4c82a182a33655d8a0e5c88", "status": "affected", "versionType": "git"}, {"version": "3da0272a4c7d0d37b47b28e87014f421296fc2be", "lessThan": "d1366e74342e75555af2648a2964deb2d5c92200", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/compaction.c"], "versions": [{"version": "6.7", "status": "affected"}, {"version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.14", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13.3", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14", "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": "6.7", "versionEndExcluding": "6.12.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.13.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.14"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4491159774d973a9e2e998d25d8fbb20fada6dfa"}, {"url": "https://git.kernel.org/stable/c/10b7d3eb535098ccd4c82a182a33655d8a0e5c88"}, {"url": "https://git.kernel.org/stable/c/d1366e74342e75555af2648a2964deb2d5c92200"}], "title": "mm/compaction: fix UBSAN shift-out-of-bounds warning", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "033BB7EE-C9A2-45EA-BAC9-87BB9D951BCD", "versionEndExcluding": "6.12.14", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0E92CEE3-1FC3-4AFC-A513-DEDBA7414F00", "versionEndExcluding": "6.13.3", "versionStartIncluding": "6.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/compaction: fix UBSAN shift-out-of-bounds warning\n\nsyzkaller reported a UBSAN shift-out-of-bounds warning of (1UL << order)\nin isolate_freepages_block(). The bogus compound_order can be any value\nbecause it is union with flags. Add back the MAX_PAGE_ORDER check to fix\nthe warning."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/compaction: se corrige la advertencia de cambio fuera de los l\u00edmites de UBSAN syzkaller inform\u00f3 una advertencia de cambio fuera de los l\u00edmites de UBSAN de (1UL &lt;&lt; order) en isolate_freepages_block(). El compuesto falso puede ser cualquier valor porque es una uni\u00f3n con indicadores. Vuelva a agregar la verificaci\u00f3n MAX_PAGE_ORDER para corregir la advertencia."}], "id": "CVE-2025-21815", "lastModified": "2025-10-28T02:53:52.103", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-02-27T20:16:04.063", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/10b7d3eb535098ccd4c82a182a33655d8a0e5c88"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4491159774d973a9e2e998d25d8fbb20fada6dfa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d1366e74342e75555af2648a2964deb2d5c92200"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: mm/compaction: fix UBSAN shift-out-of-bounds warning", "id": "2348902", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348902"}, "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-190", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm/compaction: fix UBSAN shift-out-of-bounds warning\nsyzkaller reported a UBSAN shift-out-of-bounds warning of (1UL << order)\nin isolate_freepages_block(). The bogus compound_order can be any value\nbecause it is union with flags. Add back the MAX_PAGE_ORDER check to fix\nthe warning.", "A flaw was found in the memory management subsystem in the Linux kernel. An integer overflow in a shift operation can cause unexpected behavior in memory management, resulting in system instability and a denial of service."], "name": "CVE-2025-21815", "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"}], "public_date": "2025-02-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21815\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21815\nhttps://lore.kernel.org/linux-cve-announce/2025022709-CVE-2025-21815-19c9@gregkh/T"], "statement": "The Linux kernel as shipped in Red Hat Enterprise Linux 6, 7, 8 and 9 is not affected by this vulnerability because the vulnerable code was introduced in a newer version of the Linux kernel.", "threat_severity": "Moderate"}

{}