{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40127", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.169Z", "datePublished": "2025-11-12T10:23:20.775Z", "dateUpdated": "2025-11-12T10:23:20.775Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-11-12T10:23:20.775Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: ks-sa - fix division by zero in ks_sa_rng_init\n\nFix division by zero in ks_sa_rng_init caused by missing clock\npointer initialization. The clk_get_rate() call is performed on\nan uninitialized clk pointer, resulting in division by zero when\ncalculating delay values.\n\nAdd clock initialization code before using the clock.\n\n\n drivers/char/hw_random/ks-sa-rng.c | 7 +++++++\n 1 file changed, 7 insertions(+)"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/char/hw_random/ks-sa-rng.c"], "versions": [{"version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b", "lessThan": "692a04a1e0cde1d80a33df0078c755cf02cd7268", "status": "affected", "versionType": "git"}, {"version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b", "lessThan": "d76b099011fa056950f63d05ebb6160991242f6a", "status": "affected", "versionType": "git"}, {"version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b", "lessThan": "eec7e0e19c1fa75dc65e25aa6a21ef24a03849af", "status": "affected", "versionType": "git"}, {"version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b", "lessThan": "f4238064379a91e71a9c258996acac43c50c2094", "status": "affected", "versionType": "git"}, {"version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b", "lessThan": "2b6bcce32cb5aff84588a844a4d3f6dd5353b8e2", "status": "affected", "versionType": "git"}, {"version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b", "lessThan": "55a70e1de75e5ff5f961c79a2cdc6a4468cc2bf2", "status": "affected", "versionType": "git"}, {"version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b", "lessThan": "612b1dfeb414dfa780a6316014ceddf9a74ff5c0", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/char/hw_random/ks-sa-rng.c"], "versions": [{"version": "5.5", "status": "affected"}, {"version": "0", "lessThan": "5.5", "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, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.10.246"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.15.195"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.1.156"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.6.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.12.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.17.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "6.18-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/692a04a1e0cde1d80a33df0078c755cf02cd7268"}, {"url": "https://git.kernel.org/stable/c/d76b099011fa056950f63d05ebb6160991242f6a"}, {"url": "https://git.kernel.org/stable/c/eec7e0e19c1fa75dc65e25aa6a21ef24a03849af"}, {"url": "https://git.kernel.org/stable/c/f4238064379a91e71a9c258996acac43c50c2094"}, {"url": "https://git.kernel.org/stable/c/2b6bcce32cb5aff84588a844a4d3f6dd5353b8e2"}, {"url": "https://git.kernel.org/stable/c/55a70e1de75e5ff5f961c79a2cdc6a4468cc2bf2"}, {"url": "https://git.kernel.org/stable/c/612b1dfeb414dfa780a6316014ceddf9a74ff5c0"}], "title": "hwrng: ks-sa - fix division by zero in ks_sa_rng_init", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: ks-sa - fix division by zero in ks_sa_rng_init\n\nFix division by zero in ks_sa_rng_init caused by missing clock\npointer initialization. The clk_get_rate() call is performed on\nan uninitialized clk pointer, resulting in division by zero when\ncalculating delay values.\n\nAdd clock initialization code before using the clock.\n\n\n drivers/char/hw_random/ks-sa-rng.c | 7 +++++++\n 1 file changed, 7 insertions(+)"}], "id": "CVE-2025-40127", "lastModified": "2025-11-12T16:19:12.850", "metrics": {}, "published": "2025-11-12T11:15:42.290", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2b6bcce32cb5aff84588a844a4d3f6dd5353b8e2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/55a70e1de75e5ff5f961c79a2cdc6a4468cc2bf2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/612b1dfeb414dfa780a6316014ceddf9a74ff5c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/692a04a1e0cde1d80a33df0078c755cf02cd7268"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d76b099011fa056950f63d05ebb6160991242f6a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eec7e0e19c1fa75dc65e25aa6a21ef24a03849af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f4238064379a91e71a9c258996acac43c50c2094"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: hwrng: ks-sa - fix division by zero in ks_sa_rng_init", "id": "2414472", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2414472"}, "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:\nhwrng: ks-sa - fix division by zero in ks_sa_rng_init\nFix division by zero in ks_sa_rng_init caused by missing clock\npointer initialization. The clk_get_rate() call is performed on\nan uninitialized clk pointer, resulting in division by zero when\ncalculating delay values.\nAdd clock initialization code before using the clock.\ndrivers/char/hw_random/ks-sa-rng.c | 7 +++++++\n1 file changed, 7 insertions(+)"], "name": "CVE-2025-40127", "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-2025-40127\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40127\nhttps://lore.kernel.org/linux-cve-announce/2025111253-CVE-2025-40127-361e@gregkh/T"], "threat_severity": "Moderate"}