{"api_version":"1","generated_at":"2026-08-16T15:16:24+00:00","cve":"CVE-2026-72394","urls":{"html":"https://cve.report/CVE-2026-72394","api":"https://cve.report/api/cve/CVE-2026-72394.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72394","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72394"},"summary":{"title":"hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero\n\nSashiko reports:\n\nIn the aspeed-g6-pwm-tacho driver, the aspeed_tach_val_to_rpm() function\ncalculates the fan RPM using the tachometer value. However, it does not\ncheck if the tachometer value is zero before performing the division.\n\nIf the hardware reports a tachometer value of 0 (which can happen due to\nan extremely fast pulse, a stuck edge, or a hardware glitch), the\ncalculated tach_div evaluates to 0. The subsequent call to do_div() with\ntach_div as the divisor triggers a divide-by-zero exception, leading to\na kernel panic.\n\nCheck the divisor against zero to fix the problem.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:12","updated_at":"2026-08-15 06:22:12"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3","name":"https://git.kernel.org/stable/c/a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/898ca04b096b9e4640300eab91468c826a1ec92b","name":"https://git.kernel.org/stable/c/898ca04b096b9e4640300eab91468c826a1ec92b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fe87b8dc67f1b2c64e76a66e78468c533d3c44ca","name":"https://git.kernel.org/stable/c/fe87b8dc67f1b2c64e76a66e78468c533d3c44ca","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1","name":"https://git.kernel.org/stable/c/fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72394","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72394","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 898ca04b096b9e4640300eab91468c826a1ec92b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7e1449cd15d1096157d1a9923b82e37602fb7eb0 fe87b8dc67f1b2c64e76a66e78468c533d3c44ca git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"72394","cve":"CVE-2026-72394","epss":"0.002090000","percentile":"0.113150000","score_date":"2026-08-15","updated_at":"2026-08-16 00:00:31"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hwmon/aspeed-g6-pwm-tach.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3","status":"affected","version":"7e1449cd15d1096157d1a9923b82e37602fb7eb0","versionType":"git"},{"lessThan":"898ca04b096b9e4640300eab91468c826a1ec92b","status":"affected","version":"7e1449cd15d1096157d1a9923b82e37602fb7eb0","versionType":"git"},{"lessThan":"fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1","status":"affected","version":"7e1449cd15d1096157d1a9923b82e37602fb7eb0","versionType":"git"},{"lessThan":"fe87b8dc67f1b2c64e76a66e78468c533d3c44ca","status":"affected","version":"7e1449cd15d1096157d1a9923b82e37602fb7eb0","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/hwmon/aspeed-g6-pwm-tach.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.9"},{"lessThan":"6.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc2","versionStartIncluding":"6.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero\n\nSashiko reports:\n\nIn the aspeed-g6-pwm-tacho driver, the aspeed_tach_val_to_rpm() function\ncalculates the fan RPM using the tachometer value. However, it does not\ncheck if the tachometer value is zero before performing the division.\n\nIf the hardware reports a tachometer value of 0 (which can happen due to\nan extremely fast pulse, a stuck edge, or a hardware glitch), the\ncalculated tach_div evaluates to 0. The subsequent call to do_div() with\ntach_div as the divisor triggers a divide-by-zero exception, leading to\na kernel panic.\n\nCheck the divisor against zero to fix the problem."}],"providerMetadata":{"dateUpdated":"2026-08-15T05:56:21.707Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a3f98bd397398e2d4a7f98e006b5aaf4d54ebdf3"},{"url":"https://git.kernel.org/stable/c/898ca04b096b9e4640300eab91468c826a1ec92b"},{"url":"https://git.kernel.org/stable/c/fb8a5afe6f1f8aa7f19c6dda23d277dd6ae5d9e1"},{"url":"https://git.kernel.org/stable/c/fe87b8dc67f1b2c64e76a66e78468c533d3c44ca"}],"title":"hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72394","datePublished":"2026-08-15T05:56:21.707Z","dateReserved":"2026-08-09T03:40:39.924Z","dateUpdated":"2026-08-15T05:56:21.707Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:12","lastModifiedDate":"2026-08-15 06:22:12","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72394","Ordinal":"1","Title":"hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against di","CVE":"CVE-2026-72394","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72394","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against divide-by-zero\n\nSashiko reports:\n\nIn the aspeed-g6-pwm-tacho driver, the aspeed_tach_val_to_rpm() function\ncalculates the fan RPM using the tachometer value. However, it does not\ncheck if the tachometer value is zero before performing the division.\n\nIf the hardware reports a tachometer value of 0 (which can happen due to\nan extremely fast pulse, a stuck edge, or a hardware glitch), the\ncalculated tach_div evaluates to 0. The subsequent call to do_div() with\ntach_div as the divisor triggers a divide-by-zero exception, leading to\na kernel panic.\n\nCheck the divisor against zero to fix the problem.","Type":"Description","Title":"hwmon: (aspeed-g6-pwm-tach) Guard fan RPM calculation against di"}]}}}