{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74546","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.914Z","datePublished":"2026-08-15T12:27:55.147Z","dateUpdated":"2026-08-19T16:38:34.886Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-19T16:38:34.886Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/hwmon/adt7470.c"],"versions":[{"version":"fc958a61ff6d34a0ec42744d3ff524ee202b2e9f","lessThan":"689a2ea75434131d0af58aeb7d51fde40e858b4d","status":"affected","versionType":"git"},{"version":"fc958a61ff6d34a0ec42744d3ff524ee202b2e9f","lessThan":"009240d057e26831cc925feaba4c490209c1d0ba","status":"affected","versionType":"git"},{"version":"fc958a61ff6d34a0ec42744d3ff524ee202b2e9f","lessThan":"d328175045176f85c15c369bd21dc551351e7935","status":"affected","versionType":"git"},{"version":"fc958a61ff6d34a0ec42744d3ff524ee202b2e9f","lessThan":"832069bec79cf6f903441c5769d3cdba95d0af33","status":"affected","versionType":"git"},{"version":"fc958a61ff6d34a0ec42744d3ff524ee202b2e9f","lessThan":"96ad57d31763559d376416cdf3bf5ae79bbbebec","status":"affected","versionType":"git"},{"version":"fc958a61ff6d34a0ec42744d3ff524ee202b2e9f","lessThan":"76963b04b2d1c648d69949d8dd521e1ff7f40b51","status":"affected","versionType":"git"},{"version":"fc958a61ff6d34a0ec42744d3ff524ee202b2e9f","lessThan":"1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3","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/adt7470.c"],"versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","status":"unaffected","versionType":"semver"},{"version":"5.15.216","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.183","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.151","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.103","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.44","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.8","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"5.15","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2"}]}]}],"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"}}}}