CVE-2026-74547

CVE CVE-2026-74547EUVD EUVD-2026-59740Published 2026-08-15T12:27:55.000ZLast changed 2026-08-19T16:38:37.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread When userspace configures 'auto_update_interval' to 0 via sysfs, the background kthread executes schedule_timeout_interruptible(0), which returns immediately. If 'num_temp_sensors' is concurrently or previously set to 0, the msleep_interruptible() delay inside adt7470_read_temperatures() also becomes 0. This combination forces the background thread into a tight, unbounded busy-loop, hogging the CPU and flooding the I2C bus with a continuous stream of transactions. Fix this vulnerability by raising the lower limit of the clamp_val in auto_update_interval_store() from 0 to 500 milliseconds. This guarantees a reasonable minimum sleep window between sensor updates, protecting the system from intentional or accidental I2C bus denial of service.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 89fac11cb3e7c5860c425dba14845c09ccede39d <1325975a2eab265510e6036d8bf0c0068373d332; 2.6.29; patch: 5.10.265; 89fac11cb3e7c5860c425dba14845c09ccede39d <cb0b7f9c43b0abbd422a7e4c2c85e91db429207c; 89fac11cb3e7c5860c425dba14845c09ccede39d <1a42bd72a66205e439db1d1142442b62d393408a; patch: 7.1.8; 89fac11cb3e7c5860c425dba14845c09ccede39d <5ea299c3aa42a827f6a863eeead6de3525bbb17a; patch: 6.6.151; 89fac11cb3e7c5860c425dba14845c09ccede39d <38e6b5ce5794ff09442231cc171c2be5e900bab3; patch: 6.1.183; patch: 5.15.216; patch: 0; 89fac11cb3e7c5860c425dba14845c09ccede39d <4dc1518f9cc57c6db99514cafeb02dd7117d5bda; 89fac11cb3e7c5860c425dba14845c09ccede39d <2c4c4d7cadd10b50b5489183bbbb9eb95f6f8344; patch: 6.18.44; patch: 7.2; patch: 6.12.103; 89fac11cb3e7c5860c425dba14845c09ccede39d <82d65f7ef11edcea0228745440b8b4b1f222c34c

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Carried in the product catalogue

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Linux — Linux

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