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vuln-cve/data/2026/46xxx/CVE-2026-46001.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-46001",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-05-13T15:03:33.091Z",
"datePublished": "2026-05-27T12:55:56.128Z",
"dateUpdated": "2026-06-14T17:47:16.457Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-06-14T17:47:16.457Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pt5161l) Fix bugs in pt5161l_read_block_data()\n\nFix two bugs in pt5161l_read_block_data():\n\n1. Buffer overrun: The local buffer rbuf is declared as u8 rbuf[24],\n but i2c_smbus_read_block_data() can return up to\n I2C_SMBUS_BLOCK_MAX (32) bytes. The i2c-core copies the data into\n the caller's buffer before the return value can be checked, so\n the post-read length validation does not prevent a stack overrun\n if a device returns more than 24 bytes. Resize the buffer to\n I2C_SMBUS_BLOCK_MAX.\n\n2. Unexpected positive return on length mismatch: When all three\n retries are exhausted because the device returns data with an\n unexpected length, i2c_smbus_read_block_data() returns a positive\n byte count. The function returns this directly, and callers treat\n any non-negative return as success, processing stale or incomplete\n buffer contents. Return -EIO when retries are exhausted with a\n positive return value, preserving the negative error code on I2C\n failure."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/hwmon/pt5161l.c"
],
"versions": [
{
"version": "1b2ca93cd0592b1fcbc6f8b64e02552bc15f4bb4",
"lessThan": "7eccabff1c9ec15e4b6fe186d5c147b13a9cdb4e",
"status": "affected",
"versionType": "git"
},
{
"version": "1b2ca93cd0592b1fcbc6f8b64e02552bc15f4bb4",
"lessThan": "95d48e37a1304d6148406c799479c0fb505aefa7",
"status": "affected",
"versionType": "git"
},
{
"version": "1b2ca93cd0592b1fcbc6f8b64e02552bc15f4bb4",
"lessThan": "a11aa9c5fd9dfe62be7cfec1f2a7546afb77254c",
"status": "affected",
"versionType": "git"
},
{
"version": "1b2ca93cd0592b1fcbc6f8b64e02552bc15f4bb4",
"lessThan": "24c73e93d6a756e1b8626bb259d2e07c5b89b370",
"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/pt5161l.c"
],
"versions": [
{
"version": "6.9",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.9",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.86",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.27",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.0.4",
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1",
"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": "6.12.86"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "6.18.27"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "7.0.4"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "7.1"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/7eccabff1c9ec15e4b6fe186d5c147b13a9cdb4e"
},
{
"url": "https://git.kernel.org/stable/c/95d48e37a1304d6148406c799479c0fb505aefa7"
},
{
"url": "https://git.kernel.org/stable/c/a11aa9c5fd9dfe62be7cfec1f2a7546afb77254c"
},
{
"url": "https://git.kernel.org/stable/c/24c73e93d6a756e1b8626bb259d2e07c5b89b370"
}
],
"title": "hwmon: (pt5161l) Fix bugs in pt5161l_read_block_data()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}