CVE-2025-68803

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This violates RFC 8881 section\n6.4.1.3: \"the ACL attribute is set as given\".\n\nThe issue occurs in nfsd_create_setattr(), which calls\nnfsd_attrs_valid() to determine whether to call nfsd_setattr().\nHowever, nfsd_attrs_valid() checks only for iattr changes and\nsecurity labels, but not POSIX ACLs. When only an ACL is present,\nthe function returns false, nfsd_setattr() is skipped, and the\nPOSIX ACL is never applied to the inode.\n\nSubsequently, when the client retrieves the ACL, the server finds\nno POSIX ACL on the inode and returns one generated from the file's\nmode bits rather than returning the originally-specified ACL."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable NFSD path is reached through NFSv4 CREATE or OPEN(CREATE) requests received over the network.\nAC:L - The ACL omission is deterministic when creation leaves only ACL attributes after mode handling; no race or uncontrollable condition is required.\nPR:L - The attacker requires ordinary access to the exported filesystem, but no administrative privileges; export security and parent-directory permissions are enforced.\nUI:R - A separate client or user must first create the target object with a named ACL before an excluded principal can exploit the resulting mode-based permissions.\nS:U - The incorrect authorization and resulting impact remain within the NFSD server and its exported filesystem security authority.\nC:H - Omitting a named deny entry can make a principal fall through to permissive mode bits, exposing the complete contents of sensitive files or inherited directory trees.\nI:H - When the fallback mode permits writing, the excluded principal can fully modify or truncate security-critical NFS data.\nA:H - Unauthorized truncation, or omission of an ACL granting a required service principal access, can persistently make critical NFS-hosted data or applications unavailable."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/nfsd/vfs.h"], "versions": [{"version": 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This violates RFC 8881 section\n6.4.1.3: \"the ACL attribute is set as given\".\n\nThe issue occurs in nfsd_create_setattr(), which calls\nnfsd_attrs_valid() to determine whether to call nfsd_setattr().\nHowever, nfsd_attrs_valid() checks only for iattr changes and\nsecurity labels, but not POSIX ACLs. When only an ACL is present,\nthe function returns false, nfsd_setattr() is skipped, and the\nPOSIX ACL is never applied to the inode.\n\nSubsequently, when the client retrieves the ACL, the server finds\nno POSIX ACL on the inode and returns one generated from the file's\nmode bits rather than returning the originally-specified ACL."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.248", "versionStartIncluding": "5.10.220"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.198", "versionStartIncluding": "5.15.154"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.160", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.121", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.64", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.3", "versionStartIncluding": "6.0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.19", "versionStartIncluding": "6.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:11:36.253Z"}}}, "cveMetadata": {"cveId": "CVE-2025-68803", "state": "PUBLISHED", "dateUpdated": "2026-11-10T12:38:34.192Z", "dateReserved": "2025-12-24T10:30:51.045Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-01-13T15:29:11.732Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/nfsd/vfs.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c182e1e0b7640f6bcc0c5ca8d473f7c57199ea3d", "status": "affected", "version": "c5409ce523af40d5c3019717bc5b4f72038d48be", "versionType": "git"}, {"lessThan": "75f91534f9acdfef77f8fa094313b7806f801725", "status": "affected", "version": "d52acd23a327cada5fb597591267cfc09f08bb1d", "versionType": "git"}, {"lessThan": "60dbdef2ebc2317266a385e4debdb1bb0e57afe1", "status": "affected", "version": "c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b", "versionType": "git"}, {"lessThan": "381261f24f4e4b41521c0e5ef5cc0b9a786a9862", "status": "affected", "version": "c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b", "versionType": "git"}, {"lessThan": "bf4e671c651534a307ab2fabba4926116beef8c3", "status": "affected", "version": "c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b", "versionType": "git"}, {"lessThan": "214b396480061cbc8b16f2c518b2add7fbfa5192", "status": "affected", "version": "c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b", "versionType": "git"}, {"lessThan": "913f7cf77bf14c13cfea70e89bcb6d0b22239562", "status": "affected", "version": "c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b", "versionType": "git"}, {"lessThan": "5.10.248", "status": "affected", "version": "5.10.220", "versionType": "semver"}, {"lessThan": "5.15.198", "status": "affected", "version": "5.15.154", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/nfsd/vfs.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.0"}, {"lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.248", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.198", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.160", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.121", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.64", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.19", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.6", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)", "vendor": "Siemens", "versions": [{"lessThan": "*", "status": "affected", "version": "V3.1.7", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: NFSv4 file creation neglects setting ACL\n\nAn NFSv4 client that sets an ACL with a named principal during file\ncreation retrieves the ACL afterwards, and finds that it is only a\ndefault ACL (based on the mode bits) and not the ACL that was\nrequested during file creation. This violates RFC 8881 section\n6.4.1.3: \"the ACL attribute is set as given\".\n\nThe issue occurs in nfsd_create_setattr(), which calls\nnfsd_attrs_valid() to determine whether to call nfsd_setattr().\nHowever, nfsd_attrs_valid() checks only for iattr changes and\nsecurity labels, but not POSIX ACLs. When only an ACL is present,\nthe function returns false, nfsd_setattr() is skipped, and the\nPOSIX ACL is never applied to the inode.\n\nSubsequently, when the client retrieves the ACL, the server finds\nno POSIX ACL on the inode and returns one generated from the file's\nmode bits rather than returning the originally-specified ACL."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nNFSD: la creaci\u00f3n de archivos NFSv4 omite establecer la ACL\n\nUn cliente NFSv4 que establece una ACL con un principal nombrado durante la creaci\u00f3n del archivo recupera la ACL despu\u00e9s, y encuentra que es solo una ACL predeterminada (basada en los bits de modo) y no la ACL que fue solicitada durante la creaci\u00f3n del archivo. Esto viola la secci\u00f3n 6.4.1.3 de RFC 8881: 'el atributo ACL se establece tal como se proporciona'.\n\nEl problema ocurre en nfsd_create_setattr(), que llama a nfsd_attrs_valid() para determinar si llamar a nfsd_setattr(). Sin embargo, nfsd_attrs_valid() verifica solo los cambios de iattr y las etiquetas de seguridad, pero no las ACL de POSIX. Cuando solo una ACL est\u00e1 presente, la funci\u00f3n devuelve falso, nfsd_setattr() es omitida, y la ACL de POSIX nunca se aplica al inodo.\n\nPosteriormente, cuando el cliente recupera la ACL, el servidor no encuentra ninguna ACL de POSIX en el inodo y devuelve una generada a partir de los bits de modo del archivo en lugar de devolver la ACL especificada originalmente."}], "id": "CVE-2025-68803", "lastModified": "2026-11-10T13:18:00.450", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-68803", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:05:24.284247Z", "version": "2.0.3"}}]}, "published": "2026-01-13T16:16:02.377", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/214b396480061cbc8b16f2c518b2add7fbfa5192"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/381261f24f4e4b41521c0e5ef5cc0b9a786a9862"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60dbdef2ebc2317266a385e4debdb1bb0e57afe1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/75f91534f9acdfef77f8fa094313b7806f801725"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/913f7cf77bf14c13cfea70e89bcb6d0b22239562"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bf4e671c651534a307ab2fabba4926116beef8c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c182e1e0b7640f6bcc0c5ca8d473f7c57199ea3d"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: NFSD: NFSv4 file creation neglects setting ACL", "id": "2429068", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2429068"}, "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": ["In the Linux kernel, the following vulnerability has been resolved:\nNFSD: NFSv4 file creation neglects setting ACL\nAn NFSv4 client that sets an ACL with a named principal during file\ncreation retrieves the ACL afterwards, and finds that it is only a\ndefault ACL (based on the mode bits) and not the ACL that was\nrequested during file creation. This violates RFC 8881 section\n6.4.1.3: \"the ACL attribute is set as given\".\nThe issue occurs in nfsd_create_setattr(), which calls\nnfsd_attrs_valid() to determine whether to call nfsd_setattr().\nHowever, nfsd_attrs_valid() checks only for iattr changes and\nsecurity labels, but not POSIX ACLs. When only an ACL is present,\nthe function returns false, nfsd_setattr() is skipped, and the\nPOSIX ACL is never applied to the inode.\nSubsequently, when the client retrieves the ACL, the server finds\nno POSIX ACL on the inode and returns one generated from the file's\nmode bits rather than returning the originally-specified ACL."], "name": "CVE-2025-68803", "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": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-01-13T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-68803\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-68803\nhttps://lore.kernel.org/linux-cve-announce/2026011309-CVE-2025-68803-d897@gregkh/T"], "threat_severity": "Moderate"}

{}