CVE-2026-74546 (GCVE-0-2026-74546)
Vulnerability from cvelistv5
Published
2026-08-15 12:27
Modified
2026-08-19 16:38
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
If the fan data becomes 0 between the FAN_DATA_VALID() check and the
FAN_PERIOD_TO_RPM() conversion, it will result in a divide-by-zero crash
due to a race with a concurrent update of the cached fan value.
Fix a TOCTOU issue by reading fan data once.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: fc958a61ff6d34a0ec42744d3ff524ee202b2e9f Version: fc958a61ff6d34a0ec42744d3ff524ee202b2e9f Version: fc958a61ff6d34a0ec42744d3ff524ee202b2e9f Version: fc958a61ff6d34a0ec42744d3ff524ee202b2e9f Version: fc958a61ff6d34a0ec42744d3ff524ee202b2e9f Version: fc958a61ff6d34a0ec42744d3ff524ee202b2e9f Version: fc958a61ff6d34a0ec42744d3ff524ee202b2e9f |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/hwmon/adt7470.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "689a2ea75434131d0af58aeb7d51fde40e858b4d",
"status": "affected",
"version": "fc958a61ff6d34a0ec42744d3ff524ee202b2e9f",
"versionType": "git"
},
{
"lessThan": "009240d057e26831cc925feaba4c490209c1d0ba",
"status": "affected",
"version": "fc958a61ff6d34a0ec42744d3ff524ee202b2e9f",
"versionType": "git"
},
{
"lessThan": "d328175045176f85c15c369bd21dc551351e7935",
"status": "affected",
"version": "fc958a61ff6d34a0ec42744d3ff524ee202b2e9f",
"versionType": "git"
},
{
"lessThan": "832069bec79cf6f903441c5769d3cdba95d0af33",
"status": "affected",
"version": "fc958a61ff6d34a0ec42744d3ff524ee202b2e9f",
"versionType": "git"
},
{
"lessThan": "96ad57d31763559d376416cdf3bf5ae79bbbebec",
"status": "affected",
"version": "fc958a61ff6d34a0ec42744d3ff524ee202b2e9f",
"versionType": "git"
},
{
"lessThan": "76963b04b2d1c648d69949d8dd521e1ff7f40b51",
"status": "affected",
"version": "fc958a61ff6d34a0ec42744d3ff524ee202b2e9f",
"versionType": "git"
},
{
"lessThan": "1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3",
"status": "affected",
"version": "fc958a61ff6d34a0ec42744d3ff524ee202b2e9f",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/hwmon/adt7470.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.15"
},
{
"lessThan": "5.15",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.151",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.103",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.216",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.183",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.151",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.103",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.44",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.8",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "5.15",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read\n\nIf the fan data becomes 0 between the FAN_DATA_VALID() check and the\nFAN_PERIOD_TO_RPM() conversion, it will result in a divide-by-zero crash\ndue to a race with a concurrent update of the cached fan value.\n\nFix a TOCTOU issue by reading fan data once."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:38:34.886Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/689a2ea75434131d0af58aeb7d51fde40e858b4d"
},
{
"url": "https://git.kernel.org/stable/c/009240d057e26831cc925feaba4c490209c1d0ba"
},
{
"url": "https://git.kernel.org/stable/c/d328175045176f85c15c369bd21dc551351e7935"
},
{
"url": "https://git.kernel.org/stable/c/832069bec79cf6f903441c5769d3cdba95d0af33"
},
{
"url": "https://git.kernel.org/stable/c/96ad57d31763559d376416cdf3bf5ae79bbbebec"
},
{
"url": "https://git.kernel.org/stable/c/76963b04b2d1c648d69949d8dd521e1ff7f40b51"
},
{
"url": "https://git.kernel.org/stable/c/1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3"
}
],
"title": "hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-74546",
"datePublished": "2026-08-15T12:27:55.147Z",
"dateReserved": "2026-08-15T05:44:03.914Z",
"dateUpdated": "2026-08-19T16:38:34.886Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…