{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74547","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.915Z","datePublished":"2026-08-15T12:27:55.777Z","dateUpdated":"2026-08-19T16:38:37.219Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-19T16:38:37.219Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (adt7470) Fix busy-loop and I2C flooding in update thread\n\nWhen userspace configures 'auto_update_interval' to 0 via sysfs, the\nbackground kthread executes schedule_timeout_interruptible(0), which\nreturns immediately.\n\nIf 'num_temp_sensors' is concurrently or previously set to 0, the\nmsleep_interruptible() delay inside adt7470_read_temperatures() also\nbecomes 0. This combination forces the background thread into a tight,\nunbounded busy-loop, hogging the CPU and flooding the I2C bus with a\ncontinuous stream of transactions.\n\nFix this vulnerability by raising the lower limit of the clamp_val in\nauto_update_interval_store() from 0 to 500 milliseconds. This guarantees\na reasonable minimum sleep window between sensor updates, protecting the\nsystem from intentional or accidental I2C bus denial of service."}],"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":"89fac11cb3e7c5860c425dba14845c09ccede39d","lessThan":"2c4c4d7cadd10b50b5489183bbbb9eb95f6f8344","status":"affected","versionType":"git"},{"version":"89fac11cb3e7c5860c425dba14845c09ccede39d","lessThan":"4dc1518f9cc57c6db99514cafeb02dd7117d5bda","status":"affected","versionType":"git"},{"version":"89fac11cb3e7c5860c425dba14845c09ccede39d","lessThan":"1325975a2eab265510e6036d8bf0c0068373d332","status":"affected","versionType":"git"},{"version":"89fac11cb3e7c5860c425dba14845c09ccede39d","lessThan":"1a42bd72a66205e439db1d1142442b62d393408a","status":"affected","versionType":"git"},{"version":"89fac11cb3e7c5860c425dba14845c09ccede39d","lessThan":"38e6b5ce5794ff09442231cc171c2be5e900bab3","status":"affected","versionType":"git"},{"version":"89fac11cb3e7c5860c425dba14845c09ccede39d","lessThan":"82d65f7ef11edcea0228745440b8b4b1f222c34c","status":"affected","versionType":"git"},{"version":"89fac11cb3e7c5860c425dba14845c09ccede39d","lessThan":"5ea299c3aa42a827f6a863eeead6de3525bbb17a","status":"affected","versionType":"git"},{"version":"89fac11cb3e7c5860c425dba14845c09ccede39d","lessThan":"cb0b7f9c43b0abbd422a7e4c2c85e91db429207c","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":"2.6.29","status":"affected"},{"version":"0","lessThan":"2.6.29","status":"unaffected","versionType":"semver"},{"version":"5.10.265","lessThanOrEqual":"5.10.*","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":"2.6.29","versionEndExcluding":"5.10.265"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.6.151"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.12.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2c4c4d7cadd10b50b5489183bbbb9eb95f6f8344"},{"url":"https://git.kernel.org/stable/c/4dc1518f9cc57c6db99514cafeb02dd7117d5bda"},{"url":"https://git.kernel.org/stable/c/1325975a2eab265510e6036d8bf0c0068373d332"},{"url":"https://git.kernel.org/stable/c/1a42bd72a66205e439db1d1142442b62d393408a"},{"url":"https://git.kernel.org/stable/c/38e6b5ce5794ff09442231cc171c2be5e900bab3"},{"url":"https://git.kernel.org/stable/c/82d65f7ef11edcea0228745440b8b4b1f222c34c"},{"url":"https://git.kernel.org/stable/c/5ea299c3aa42a827f6a863eeead6de3525bbb17a"},{"url":"https://git.kernel.org/stable/c/cb0b7f9c43b0abbd422a7e4c2c85e91db429207c"}],"title":"hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread","x_generator":{"engine":"bippy-1.2.0"}}}}