{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40126", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.169Z", "datePublished": "2025-11-12T10:23:20.460Z", "dateUpdated": "2025-11-12T10:23:20.460Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-11-12T10:23:20.460Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC\n\nThe referenced commit introduced exception handlers on user-space memory\nreferences in copy_from_user and copy_to_user. These handlers return from\nthe respective function and calculate the remaining bytes left to copy\nusing the current register contents. This commit fixes a couple of bad\ncalculations. This will fix the return value of copy_from_user and\ncopy_to_user in the faulting case. The behaviour of memcpy stays unchanged."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/sparc/lib/U1memcpy.S"], "versions": [{"version": "cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada", "lessThan": "0bf3dc3a2156f1c5ddaba4b85d09767874634114", "status": "affected", "versionType": "git"}, {"version": "cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada", "lessThan": "41c18baee66134e6ef786eb075c1b6adb22432b0", "status": "affected", "versionType": "git"}, {"version": "cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada", "lessThan": "59424dc0d0e044b2eb007686a4724ddd91d57db5", "status": "affected", "versionType": "git"}, {"version": "cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada", "lessThan": "9b137f277cc3297044aabd950f589e505d30104c", "status": "affected", "versionType": "git"}, {"version": "cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada", "lessThan": 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"affected"}, {"version": "0", "lessThan": "4.9", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.301", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.246", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.195", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.156", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.112", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.53", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.3", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, 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"https://git.kernel.org/stable/c/57c278500fce3cd4e1c540700c0b05426a958393"}, {"url": "https://git.kernel.org/stable/c/4fba1713001195e59cfc001ff1f2837dab877efb"}], "title": "sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC\n\nThe referenced commit introduced exception handlers on user-space memory\nreferences in copy_from_user and copy_to_user. These handlers return from\nthe respective function and calculate the remaining bytes left to copy\nusing the current register contents. This commit fixes a couple of bad\ncalculations. This will fix the return value of copy_from_user and\ncopy_to_user in the faulting case. The behaviour of memcpy stays unchanged."}], "id": "CVE-2025-40126", "lastModified": "2025-11-12T16:19:12.850", "metrics": {}, "published": "2025-11-12T11:15:42.163", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0bf3dc3a2156f1c5ddaba4b85d09767874634114"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/41c18baee66134e6ef786eb075c1b6adb22432b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4fba1713001195e59cfc001ff1f2837dab877efb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/57c278500fce3cd4e1c540700c0b05426a958393"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/59424dc0d0e044b2eb007686a4724ddd91d57db5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/674ff598148a28bae0b5372339de56f2abf0b1d1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7de3a75bbc8465d816336c74d50109e73501efab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9b137f277cc3297044aabd950f589e505d30104c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC", "id": "2414510", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2414510"}, "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": ["In the Linux kernel, the following vulnerability has been resolved:\nsparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC\nThe referenced commit introduced exception handlers on user-space memory\nreferences in copy_from_user and copy_to_user. These handlers return from\nthe respective function and calculate the remaining bytes left to copy\nusing the current register contents. This commit fixes a couple of bad\ncalculations. This will fix the return value of copy_from_user and\ncopy_to_user in the faulting case. The behaviour of memcpy stays unchanged."], "name": "CVE-2025-40126", "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": "2025-11-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40126\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40126\nhttps://lore.kernel.org/linux-cve-announce/2025111253-CVE-2025-40126-a667@gregkh/T"], "threat_severity": "Moderate"}