CVE-2026-74685

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74685", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.926Z", "datePublished": "2026-08-22T15:32:51.493Z", "dateUpdated": "2026-08-22T15:32:51.493Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-22T15:32:51.493Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (ltc4282) Clamp negative current limits\n\nWhen a negative value is passed to ltc4282_write_curr(), the signed long\nval is cast directly to u64:\n\ndrivers/hwmon/ltc4282.c:ltc4282_write_curr() {\n /* need to pass it in millivolt */\n u32 in = DIV_ROUND_CLOSEST_ULL((u64)val * st->rsense, DECA * MICRO);\n ...\n}\n\nThis cast converts negative inputs into large positive values. The\nsubsequent division result overflows the u32 in variable, truncating\nto a pseudo-random positive value. When this is passed to\nltc4282_write_voltage_byte(), it is clamped to the maximum limit instead\nof zero.\n\nClamp val to 0 and to the maximum supported upper limit before the cast\nand assign the result to a 64-bit temporary variable before the division\nto avoid the underflow and an also possible overflow."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hwmon/ltc4282.c"], "versions": [{"version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0", "lessThan": "60e06c4dba696173982393252a40ceb7dd2eec18", "status": "affected", "versionType": "git"}, {"version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0", "lessThan": "de58b90a4d1417c15b693eb04c0ce6bc925d84c6", "status": "affected", "versionType": "git"}, {"version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0", "lessThan": "046e56b53c09375ef39903514496aa5508db9729", "status": "affected", "versionType": "git"}, {"version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0", "lessThan": "e253dd5f9f6d875a317895bf43ec9534ed7523cb", "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/hwmon/ltc4282.c"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.104", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.45", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.9", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "6.9", "versionEndExcluding": "6.12.104"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.18.45"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.1.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/60e06c4dba696173982393252a40ceb7dd2eec18"}, {"url": "https://git.kernel.org/stable/c/de58b90a4d1417c15b693eb04c0ce6bc925d84c6"}, {"url": "https://git.kernel.org/stable/c/046e56b53c09375ef39903514496aa5508db9729"}, {"url": "https://git.kernel.org/stable/c/e253dd5f9f6d875a317895bf43ec9534ed7523cb"}], "title": "hwmon: (ltc4282) Clamp negative current limits", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/hwmon/ltc4282.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "60e06c4dba696173982393252a40ceb7dd2eec18", "status": "affected", "version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0", "versionType": "git"}, {"lessThan": "de58b90a4d1417c15b693eb04c0ce6bc925d84c6", "status": "affected", "version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0", "versionType": "git"}, {"lessThan": "046e56b53c09375ef39903514496aa5508db9729", "status": "affected", "version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0", "versionType": "git"}, {"lessThan": "e253dd5f9f6d875a317895bf43ec9534ed7523cb", "status": "affected", "version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/hwmon/ltc4282.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.9"}, {"lessThan": "6.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.104", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.45", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nhwmon: (ltc4282) Clamp negative current limits\n\nWhen a negative value is passed to ltc4282_write_curr(), the signed long\nval is cast directly to u64:\n\ndrivers/hwmon/ltc4282.c:ltc4282_write_curr() {\n /* need to pass it in millivolt */\n u32 in = DIV_ROUND_CLOSEST_ULL((u64)val * st->rsense, DECA * MICRO);\n ...\n}\n\nThis cast converts negative inputs into large positive values. The\nsubsequent division result overflows the u32 in variable, truncating\nto a pseudo-random positive value. When this is passed to\nltc4282_write_voltage_byte(), it is clamped to the maximum limit instead\nof zero.\n\nClamp val to 0 and to the maximum supported upper limit before the cast\nand assign the result to a 64-bit temporary variable before the division\nto avoid the underflow and an also possible overflow."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nhwmon: (ltc4282) Limitar los l\u00edmites de corriente negativos\n\nCuando se pasa un valor negativo a ltc4282_write_curr(), el 'signed long' 'val' se convierte directamente a 'u64':\n\ndrivers/hwmon/ltc4282.c:ltc4282_write_curr() {\n /* es necesario pasarlo en milivoltios */\n u32 in = DIV_ROUND_CLOSEST_ULL((u64)val * st -> rsense, DECA * MICRO);\n ...\n}\n\nEsta conversi\u00f3n convierte las entradas negativas en valores positivos grandes. El resultado de la divisi\u00f3n subsiguiente desborda la variable 'u32 in', trunc\u00e1ndose a un valor positivo pseudoaleatorio. Cuando esto se pasa a ltc4282_write_voltage_byte(), se limita al l\u00edmite m\u00e1ximo en lugar de cero.\n\nLimitar 'val' a 0 y al l\u00edmite superior m\u00e1ximo soportado antes de la conversi\u00f3n y asignar el resultado a una variable temporal de 64 bits antes de la divisi\u00f3n para evitar el subdesbordamiento y un posible desbordamiento tambi\u00e9n."}], "id": "CVE-2026-74685", "lastModified": "2026-10-14T13:10:00.187", "metrics": {}, "published": "2026-08-22T16:16:42.870", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/046e56b53c09375ef39903514496aa5508db9729"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60e06c4dba696173982393252a40ceb7dd2eec18"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/de58b90a4d1417c15b693eb04c0ce6bc925d84c6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e253dd5f9f6d875a317895bf43ec9534ed7523cb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: hwmon: (ltc4282) Clamp negative current limits", "id": "2521493", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2521493"}, "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"}, "cwe": "CWE-190", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nhwmon: (ltc4282) Clamp negative current limits\nWhen a negative value is passed to ltc4282_write_curr(), the signed long\nval is cast directly to u64:\ndrivers/hwmon/ltc4282.c:ltc4282_write_curr() {\n/* need to pass it in millivolt */\nu32 in = DIV_ROUND_CLOSEST_ULL((u64)val * st->rsense, DECA * MICRO);\n...\n}\nThis cast converts negative inputs into large positive values. The\nsubsequent division result overflows the u32 in variable, truncating\nto a pseudo-random positive value. When this is passed to\nltc4282_write_voltage_byte(), it is clamped to the maximum limit instead\nof zero.\nClamp val to 0 and to the maximum supported upper limit before the cast\nand assign the result to a 64-bit temporary variable before the division\nto avoid the underflow and an also possible overflow.", "A flaw was found in the Linux kernel's `hwmon` subsystem, specifically within the `ltc4282` driver. When a negative value is passed to the `ltc4282_write_curr()` function, an incorrect type cast converts this input into a large positive value. This leads to an integer overflow, causing the current limit to be set to a pseudo-random positive value instead of being correctly clamped to zero. This vulnerability could result in unexpected hardware behavior or a denial of service."], "name": "CVE-2026-74685", "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": "2026-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74685\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74685\nhttps://lore.kernel.org/linux-cve-announce/2026082232-CVE-2026-74685-e28b@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cbc29538dbf7d7400f1ffc5dd5713e6a551463a0,60e06c4dba696173982393252a40ceb7dd2eec18)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cbc29538dbf7d7400f1ffc5dd5713e6a551463a0,de58b90a4d1417c15b693eb04c0ce6bc925d84c6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cbc29538dbf7d7400f1ffc5dd5713e6a551463a0,046e56b53c09375ef39903514496aa5508db9729)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cbc29538dbf7d7400f1ffc5dd5713e6a551463a0,e253dd5f9f6d875a317895bf43ec9534ed7523cb)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.9"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.104,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.45,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.9,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-22T18:15:03.690848+00:00", "updated": "2026-08-25T16:30:06.100072+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}