{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-38562", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.025Z", "datePublished": "2025-08-19T17:02:39.450Z", "dateUpdated": "2025-08-19T17:02:39.450Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-08-19T17:02:39.450Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix null pointer dereference error in generate_encryptionkey\n\nIf client send two session setups with krb5 authenticate to ksmbd,\nnull pointer dereference error in generate_encryptionkey could happen.\nsess->Preauth_HashValue is set to NULL if session is valid.\nSo this patch skip generate encryption key if session is valid."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/smb2pdu.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "96a82e19434a2522525baab59c33332658bc7653", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "d79c8bebaa622ee223128be7c66d8aaeeb634a57", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2a30ed6428ce83afedca1a6c5c5c4247bcf12d0e", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "015ef163d65496ae3ba6192c96140a22743f0353", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9c2dbbc959e1fcc6f603a1a843e9cf743ba383bb", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9b493ab6f35178afd8d619800df9071992f715de", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/smb2pdu.c"], "versions": [{"version": "6.1.148", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.102", "lessThanOrEqual": "6.6.*", "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-rc1", "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.6.102"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.15.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.16.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.17-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/96a82e19434a2522525baab59c33332658bc7653"}, {"url": "https://git.kernel.org/stable/c/d79c8bebaa622ee223128be7c66d8aaeeb634a57"}, {"url": "https://git.kernel.org/stable/c/2a30ed6428ce83afedca1a6c5c5c4247bcf12d0e"}, {"url": "https://git.kernel.org/stable/c/015ef163d65496ae3ba6192c96140a22743f0353"}, {"url": "https://git.kernel.org/stable/c/9c2dbbc959e1fcc6f603a1a843e9cf743ba383bb"}, {"url": "https://git.kernel.org/stable/c/9b493ab6f35178afd8d619800df9071992f715de"}], "title": "ksmbd: fix null pointer dereference error in generate_encryptionkey", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix null pointer dereference error in generate_encryptionkey\n\nIf client send two session setups with krb5 authenticate to ksmbd,\nnull pointer dereference error in generate_encryptionkey could happen.\nsess->Preauth_HashValue is set to NULL if session is valid.\nSo this patch skip generate encryption key if session is valid."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: se corrige el error de desreferencia de puntero nulo en generate_encryptionkey. Si el cliente env\u00eda dos configuraciones de sesi\u00f3n con autenticaci\u00f3n krb5 a ksmbd, podr\u00eda producirse un error de desreferencia de puntero nulo en generate_encryptionkey. \"sess->Preauth_HashValue\" se establece en NULL si la sesi\u00f3n es v\u00e1lida. Por lo tanto, este parche omite la generaci\u00f3n de la clave de cifrado si la sesi\u00f3n es v\u00e1lida."}], "id": "CVE-2025-38562", "lastModified": "2025-08-20T14:40:17.713", "metrics": {}, "published": "2025-08-19T17:15:32.653", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/015ef163d65496ae3ba6192c96140a22743f0353"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2a30ed6428ce83afedca1a6c5c5c4247bcf12d0e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/96a82e19434a2522525baab59c33332658bc7653"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9b493ab6f35178afd8d619800df9071992f715de"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9c2dbbc959e1fcc6f603a1a843e9cf743ba383bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d79c8bebaa622ee223128be7c66d8aaeeb634a57"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ksmbd: fix null pointer dereference error in generate_encryptionkey", "id": "2389513", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2389513"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-38562", "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": "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": "2025-08-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38562\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38562\nhttps://lore.kernel.org/linux-cve-announce/2025081907-CVE-2025-38562-1418@gregkh/T"], "threat_severity": "Moderate"}