{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40204", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.179Z", "datePublished": "2025-11-12T21:56:35.110Z", "dateUpdated": "2025-12-01T06:20:07.600Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-01T06:20:07.600Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: Fix MAC comparison to be constant-time\n\nTo prevent timing attacks, MACs need to be compared in constant time.\nUse the appropriate helper function for this."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sctp/sm_make_chunk.c", 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"https://git.kernel.org/stable/c/1cd60e0d0fb8f0e62ec4499138afce6342dc9d4c"}, {"url": "https://git.kernel.org/stable/c/9c05d44ec24126fc283835b68f82dba3ae985209"}, {"url": "https://git.kernel.org/stable/c/ed3044b9c810c5c24eb2830053fbfe5fd134c5d4"}, {"url": "https://git.kernel.org/stable/c/8019b3699289fce3f10b63f98601db97b8d105b0"}, {"url": "https://git.kernel.org/stable/c/0b32ff285ff6f6f1ac1d9495787ccce8837d6405"}, {"url": "https://git.kernel.org/stable/c/dd91c79e4f58fbe2898dac84858033700e0e99fb"}], "title": "sctp: Fix MAC comparison to be constant-time", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: Fix MAC comparison to be constant-time\n\nTo prevent timing attacks, MACs need to be compared in constant time.\nUse the appropriate helper function for this."}], "id": "CVE-2025-40204", "lastModified": "2025-11-14T16:42:30.503", "metrics": {}, "published": "2025-11-12T22:15:47.647", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b32ff285ff6f6f1ac1d9495787ccce8837d6405"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0e8b8c326c2a6de4d837b1bb034ea704f4690d77"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1cd60e0d0fb8f0e62ec4499138afce6342dc9d4c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8019b3699289fce3f10b63f98601db97b8d105b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9c05d44ec24126fc283835b68f82dba3ae985209"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b93fa8dc521d00d2d44bf034fb90e0d79b036617"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dd91c79e4f58fbe2898dac84858033700e0e99fb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ed3044b9c810c5c24eb2830053fbfe5fd134c5d4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: sctp: Fix MAC comparison to be constant-time", "id": "2414718", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2414718"}, "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-2025-40204", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "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": "2025-11-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40204\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40204\nhttps://lore.kernel.org/linux-cve-announce/2025111247-CVE-2025-40204-0f06@gregkh/T"], "threat_severity": "Important"}

{"created": "2025-11-13T09:52:20.822689+00:00", "updated": "2025-11-13T09:52:20.822714+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}