CVE-2025-39789

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-39789", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.131Z", "datePublished": "2025-09-11T16:56:37.912Z", "dateUpdated": "2026-10-21T12:37:21.691Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:37:21.691Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: x86/aegis - Add missing error checks\n\nThe skcipher_walk functions can allocate memory and can fail, so\nchecking for errors is necessary."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L", "baseScore": 7.3, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The AEGIS-128 AEAD is driven from the local crypto API \u2014 an unprivileged user reaches it directly via an AF_ALG/algif_aead socket, and in-kernel consumers (dm-crypt, xfrm ESP) are configured locally. A remote peer cannot itself supply input that reaches the failing allocation, so this is local.\nAC:L - The failure requires a memory allocation failure inside skcipher_walk, but the attacker can both force the allocating slow path on every walk step (by submitting scatterlists fragmented below the 16-byte chunksize) and induce the memory pressure, then retry the operation arbitrarily many times; the GFP_ATOMIC variant used by softirq consumers fails readily under attacker-generated load.\nPR:L - Binding an AF_ALG socket to \"aegis128\" and issuing encrypt requests requires only an unprivileged local account \u2014 no capability, and module autoload happens on the user's behalf.\nUI:N - The attacker triggers the encrypt/decrypt path entirely on their own; no victim action is needed.\nS:U - The faulty error handling and its consequences stay within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - On the unchecked error path the encrypt call returns success without encrypting, so the \"ciphertext\" handed to the caller is the raw plaintext (in-place operations) or stale kernel buffer contents (out-of-place, e.g. dm-crypt/ESP buffers), disclosing data that was supposed to be protected to disk, network peers, or backups.\nI:H - The kernel reports a successful AEAD operation while producing unencrypted, partially encrypted, or stale output with a mismatched tag, so data written to encrypted storage or an encrypted tunnel is silently wrong and cannot be distinguished from valid output by the caller.\nA:L - No kernel crash, hang, or corruption occurs; the impact is that the silently bad ciphertext/tag causes downstream rejection \u2014 dropped IPsec packets, I/O errors on integrity-protected volumes, and unrecoverable stored blocks \u2014 which is a limited interruption rather than a full loss of availability."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/crypto/aegis128-aesni-glue.c"], "versions": [{"version": "1d373d4e8e15b358f08de52956b32e0e38a11f84", "lessThan": "74d3b91f1598eedf87a977702f9f55e32698206d", "status": "affected", "versionType": "git"}, {"version": "1d373d4e8e15b358f08de52956b32e0e38a11f84", "lessThan": "b4ba650125d21e937f82fcafcd2738fe31209c05", "status": "affected", "versionType": "git"}, {"version": "1d373d4e8e15b358f08de52956b32e0e38a11f84", "lessThan": "475104178f4d30e749ee4f5473c87f692b93bebb", "status": "affected", "versionType": "git"}, {"version": "1d373d4e8e15b358f08de52956b32e0e38a11f84", "lessThan": "3d9eb180fbe8828cce43bce4c370124685b205c3", "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/x86/crypto/aegis128-aesni-glue.c"], "versions": [{"version": "4.18", "status": "affected"}, {"version": "0", "lessThan": "4.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.4", "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": "4.18", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.16.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.18", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/74d3b91f1598eedf87a977702f9f55e32698206d"}, {"url": "https://git.kernel.org/stable/c/b4ba650125d21e937f82fcafcd2738fe31209c05"}, {"url": "https://git.kernel.org/stable/c/475104178f4d30e749ee4f5473c87f692b93bebb"}, {"url": "https://git.kernel.org/stable/c/3d9eb180fbe8828cce43bce4c370124685b205c3"}], "title": "crypto: x86/aegis - Add missing error checks", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/x86/crypto/aegis128-aesni-glue.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "74d3b91f1598eedf87a977702f9f55e32698206d", "status": "affected", "version": "1d373d4e8e15b358f08de52956b32e0e38a11f84", "versionType": "git"}, {"lessThan": "b4ba650125d21e937f82fcafcd2738fe31209c05", "status": "affected", "version": "1d373d4e8e15b358f08de52956b32e0e38a11f84", "versionType": "git"}, {"lessThan": "475104178f4d30e749ee4f5473c87f692b93bebb", "status": "affected", "version": "1d373d4e8e15b358f08de52956b32e0e38a11f84", "versionType": "git"}, {"lessThan": "3d9eb180fbe8828cce43bce4c370124685b205c3", "status": "affected", "version": "1d373d4e8e15b358f08de52956b32e0e38a11f84", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/x86/crypto/aegis128-aesni-glue.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.18"}, {"lessThan": "4.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.4", "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": "6D4A6943-C74A-4D0A-A687-B7A52F9921D5", "versionEndExcluding": "6.16.4", "versionStartIncluding": "4.18", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: x86/aegis - Add missing error checks\n\nThe skcipher_walk functions can allocate memory and can fail, so\nchecking for errors is necessary."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\n\ncrypto: x86/aegis - A\u00f1adir comprobaciones de error faltantes\n\nLas funciones skcipher_walk pueden asignar memoria y pueden fallar, por lo que es necesario comprobar si hay errores."}], "id": "CVE-2025-39789", "lastModified": "2026-10-21T13:18:14.093", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 7.3, "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:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.5, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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": "2025-09-11T17:15:45.220", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3d9eb180fbe8828cce43bce4c370124685b205c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/475104178f4d30e749ee4f5473c87f692b93bebb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/74d3b91f1598eedf87a977702f9f55e32698206d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b4ba650125d21e937f82fcafcd2738fe31209c05"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: crypto: x86/aegis - Add missing error checks", "id": "2394636", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2394636"}, "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-2025-39789", "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": "2025-09-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39789\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39789\nhttps://lore.kernel.org/linux-cve-announce/2025091152-CVE-2025-39789-8cdc@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-12T08:02:45.577526+00:00", "updated": "2025-09-12T08:02:45.577578+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}