CVE-2026-74546
hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.15
References 7
git.kernel.org
- stable/c/689a2ea75434131d0af58aeb7d51fde40e858b4d
- stable/c/009240d057e26831cc925feaba4c490209c1d0ba
- stable/c/d328175045176f85c15c369bd21dc551351e7935
- stable/c/832069bec79cf6f903441c5769d3cdba95d0af33
- stable/c/96ad57d31763559d376416cdf3bf5ae79bbbebec
- stable/c/76963b04b2d1c648d69949d8dd521e1ff7f40b51
- stable/c/1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3