{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98678", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.363Z", "datePublished": "2026-10-18T15:45:35.605Z", "dateUpdated": "2026-10-19T09:23:47.783Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:23:47.783Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ad4030: fix invalid oversampling_ratio validation\n\nIn ad4030_set_avg_frame_len(), the logarithm is calculated before input\nvalidation. Passing zero or negative values leads to an undefined result\nfrom ilog2().\n\nValidate that the input is strictly positive prior to computing its\nlogarithm."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iio/adc/ad4030.c"], "versions": [{"version": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4", "lessThan": "6b0cc4e32599f59c994a60743f53fc72cb2979f4", "status": "affected", "versionType": "git"}, {"version": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4", "lessThan": "6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1", "status": "affected", "versionType": "git"}, {"version": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4", "lessThan": "d615210564205993e8f0e7ccb57cc2e66b7d5706", "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/iio/adc/ad4030.c"], "versions": [{"version": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.15", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6b0cc4e32599f59c994a60743f53fc72cb2979f4"}, {"url": "https://git.kernel.org/stable/c/6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1"}, {"url": "https://git.kernel.org/stable/c/d615210564205993e8f0e7ccb57cc2e66b7d5706"}], "title": "iio: adc: ad4030: fix invalid oversampling_ratio validation", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/iio/adc/ad4030.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6b0cc4e32599f59c994a60743f53fc72cb2979f4", "status": "affected", "version": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4", "versionType": "git"}, {"lessThan": "6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1", "status": "affected", "version": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4", "versionType": "git"}, {"lessThan": "d615210564205993e8f0e7ccb57cc2e66b7d5706", "status": "affected", "version": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/iio/adc/ad4030.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"lessThan": "6.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ad4030: fix invalid oversampling_ratio validation\n\nIn ad4030_set_avg_frame_len(), the logarithm is calculated before input\nvalidation. Passing zero or negative values leads to an undefined result\nfrom ilog2().\n\nValidate that the input is strictly positive prior to computing its\nlogarithm."}], "id": "CVE-2026-98678", "lastModified": "2026-10-19T10:19:32.267", "metrics": {}, "published": "2026-10-18T16:17:21.160", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6b0cc4e32599f59c994a60743f53fc72cb2979f4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d615210564205993e8f0e7ccb57cc2e66b7d5706"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: iio: adc: ad4030: fix invalid oversampling_ratio validation", "id": "2555079", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555079"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1284", "details": ["In the Linux kernel, the following vulnerability has been resolved:\niio: adc: ad4030: fix invalid oversampling_ratio validation\nIn ad4030_set_avg_frame_len(), the logarithm is calculated before input\nvalidation. Passing zero or negative values leads to an undefined result\nfrom ilog2().\nValidate that the input is strictly positive prior to computing its\nlogarithm.", "A flaw was found in the Linux kernel's Analog Devices AD4030 Analog-to-Digital Converter (ADC) driver. The driver calculates a mathematical logarithm on an averaging parameter prior to validating whether the input is positive. A local user with access to configure the device could provide a non-positive value, triggering undefined behavior that may lead to a Denial of Service (DoS)."], "name": "CVE-2026-98678", "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98678\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98678\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98678.mbox"], "threat_severity": "Moderate"}