Answer in brief
CVE-2026-74546 records a Unknown severity vulnerability in hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <d328175045176f85c15c369bd21dc551351e7935 || >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <832069bec79cf6f903441c5769d3cdba95d0af33 || >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <96ad57d31763559d376416cdf3bf5ae79bbbebec || >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <76963b04b2d1c648d69949d8dd521e1ff7f40b51 || >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3 | d328175045176f85c15c369bd21dc551351e7935, 832069bec79cf6f903441c5769d3cdba95d0af33, 96ad57d31763559d376416cdf3bf5ae79bbbebec, 76963b04b2d1c648d69949d8dd521e1ff7f40b51, 1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-74546 records a Unknown severity vulnerability in hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <d328175045176f85c15c369bd21dc551351e7935 || >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <832069bec79cf6f903441c5769d3cdba95d0af33 || >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <96ad57d31763559d376416cdf3bf5ae79bbbebec || >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <76963b04b2d1c648d69949d8dd521e1ff7f40b51 || >=fc958a61ff6d34a0ec42744d3ff524ee202b2e9f <1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3 | d328175045176f85c15c369bd21dc551351e7935, 832069bec79cf6f903441c5769d3cdba95d0af33, 96ad57d31763559d376416cdf3bf5ae79bbbebec, 76963b04b2d1c648d69949d8dd521e1ff7f40b51, 1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.