164 lines
7.7 KiB
JSON
164 lines
7.7 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-74685",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-15T05:44:03.926Z",
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"datePublished": "2026-08-22T15:32:51.493Z",
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"dateUpdated": "2026-08-22T15:32:51.493Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-22T15:32:51.493Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/hwmon/ltc4282.c"
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],
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"versions": [
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{
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"version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0",
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"lessThan": "60e06c4dba696173982393252a40ceb7dd2eec18",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0",
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"lessThan": "de58b90a4d1417c15b693eb04c0ce6bc925d84c6",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0",
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"lessThan": "046e56b53c09375ef39903514496aa5508db9729",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cbc29538dbf7d7400f1ffc5dd5713e6a551463a0",
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"lessThan": "e253dd5f9f6d875a317895bf43ec9534ed7523cb",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/hwmon/ltc4282.c"
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],
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"versions": [
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{
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"version": "6.9",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.9",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.104",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.45",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.9",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.9",
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"versionEndExcluding": "6.12.104"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.9",
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"versionEndExcluding": "6.18.45"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.9",
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"versionEndExcluding": "7.1.9"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.9",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/60e06c4dba696173982393252a40ceb7dd2eec18"
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},
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{
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"url": "https://git.kernel.org/stable/c/de58b90a4d1417c15b693eb04c0ce6bc925d84c6"
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},
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{
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"url": "https://git.kernel.org/stable/c/046e56b53c09375ef39903514496aa5508db9729"
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},
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{
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"url": "https://git.kernel.org/stable/c/e253dd5f9f6d875a317895bf43ec9534ed7523cb"
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}
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],
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"title": "hwmon: (ltc4282) Clamp negative current limits",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |