CVE-2025-39727

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-39727", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.118Z", "datePublished": "2025-09-07T15:16:17.986Z", "dateUpdated": "2026-05-11T21:35:06.160Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:35:06.160Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: swap: fix potential buffer overflow in setup_clusters()\n\nIn setup_swap_map(), we only ensure badpages are in range (0, last_page]. \nAs maxpages might be < last_page, setup_clusters() will encounter a buffer\noverflow when a badpage is >= maxpages.\n\nOnly call inc_cluster_info_page() for badpage which is < maxpages to fix\nthe issue."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/swapfile.c"], "versions": [{"version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2", "lessThan": "91b370800b3f2b3dda244c0ab06719c4971190a5", "status": "affected", "versionType": "git"}, {"version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2", "lessThan": "9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799", "status": "affected", "versionType": "git"}, {"version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2", "lessThan": "815c528b13f2bb9b3130c13bedeabf2351a68129", "status": "affected", "versionType": "git"}, {"version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2", "lessThan": "152c1339dc13ad46f1b136e8693de15980750835", "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/swapfile.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.42", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.10", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.1", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "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": "6.12", "versionEndExcluding": "6.12.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.15.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.16.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/91b370800b3f2b3dda244c0ab06719c4971190a5"}, {"url": "https://git.kernel.org/stable/c/9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799"}, {"url": "https://git.kernel.org/stable/c/815c528b13f2bb9b3130c13bedeabf2351a68129"}, {"url": "https://git.kernel.org/stable/c/152c1339dc13ad46f1b136e8693de15980750835"}], "title": "mm: swap: fix potential buffer overflow in setup_clusters()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["mm/swapfile.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "91b370800b3f2b3dda244c0ab06719c4971190a5", "status": "affected", "version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2", "versionType": "git"}, {"lessThan": "9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799", "status": "affected", "version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2", "versionType": "git"}, {"lessThan": "815c528b13f2bb9b3130c13bedeabf2351a68129", "status": "affected", "version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2", "versionType": "git"}, {"lessThan": "152c1339dc13ad46f1b136e8693de15980750835", "status": "affected", "version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["mm/swapfile.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.42", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.10", "versionType": "semver"}, {"lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.1", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1FC3F76F-C8CF-4B19-AC3D-AA1AE05558D7", "versionEndExcluding": "6.12.42", "versionStartIncluding": "6.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5890C690-B295-40C2-9121-FF5F987E5142", "versionEndExcluding": "6.15.10", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "58182352-D7DF-4CC9-841E-03C1D852C3FB", "versionEndExcluding": "6.16.1", "versionStartIncluding": "6.16", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: swap: fix potential buffer overflow in setup_clusters()\n\nIn setup_swap_map(), we only ensure badpages are in range (0, last_page]. \nAs maxpages might be < last_page, setup_clusters() will encounter a buffer\noverflow when a badpage is >= maxpages.\n\nOnly call inc_cluster_info_page() for badpage which is < maxpages to fix\nthe issue."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\n\nmm: swap: solucionar un posible desbordamiento de b\u00fafer en setup_clusters()\n\nEn setup_swap_map(), solo nos aseguramos de que las badpages est\u00e9n en el rango (0, last_page]. Como maxpages podr\u00eda ser < last_page, setup_clusters() encontrar\u00e1 un desbordamiento de b\u00fafer cuando una badpage sea >= maxpages.\n\nSolo llamar a inc_cluster_info_page() para badpage que sea < maxpages para solucionar el problema."}], "id": "CVE-2025-39727", "lastModified": "2026-10-19T21:10:00.160", "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": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-09-07T16:15:46.023", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/152c1339dc13ad46f1b136e8693de15980750835"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/815c528b13f2bb9b3130c13bedeabf2351a68129"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91b370800b3f2b3dda244c0ab06719c4971190a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: mm: swap: fix potential buffer overflow in setup_clusters()", "id": "2393733", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2393733"}, "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": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-39727", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "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": "2025-09-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39727\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39727\nhttps://lore.kernel.org/linux-cve-announce/2025090728-CVE-2025-39727-b07c@gregkh/T"], "threat_severity": "Important"}

{"created": "2025-09-08T15:17:36.332440+00:00", "updated": "2025-09-08T15:17:36.332501+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}