Answer in brief
CVE-2026-74547 records a Unknown severity vulnerability in hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=89fac11cb3e7c5860c425dba14845c09ccede39d <1a42bd72a66205e439db1d1142442b62d393408a || >=89fac11cb3e7c5860c425dba14845c09ccede39d <38e6b5ce5794ff09442231cc171c2be5e900bab3 || >=89fac11cb3e7c5860c425dba14845c09ccede39d <82d65f7ef11edcea0228745440b8b4b1f222c34c || >=89fac11cb3e7c5860c425dba14845c09ccede39d <5ea299c3aa42a827f6a863eeead6de3525bbb17a || >=89fac11cb3e7c5860c425dba14845c09ccede39d <cb0b7f9c43b0abbd422a7e4c2c85e91db429207c | 1a42bd72a66205e439db1d1142442b62d393408a, 38e6b5ce5794ff09442231cc171c2be5e900bab3, 82d65f7ef11edcea0228745440b8b4b1f222c34c, 5ea299c3aa42a827f6a863eeead6de3525bbb17a, cb0b7f9c43b0abbd422a7e4c2c85e91db429207c |
| Linux/Linuxgeneric | 2.6.29 | Not reported |
| Linux/Linuxgeneric | >=89fac11cb3e7c5860c425dba14845c09ccede39d <2c4c4d7cadd10b50b5489183bbbb9eb95f6f8344 || >=89fac11cb3e7c5860c425dba14845c09ccede39d <4dc1518f9cc57c6db99514cafeb02dd7117d5bda || >=89fac11cb3e7c5860c425dba14845c09ccede39d <1325975a2eab265510e6036d8bf0c0068373d332 || >=89fac11cb3e7c5860c425dba14845c09ccede39d <1a42bd72a66205e439db1d1142442b62d393408a || >=89fac11cb3e7c5860c425dba14845c09ccede39d <38e6b5ce5794ff09442231cc171c2be5e900bab3 || >=89fac11cb3e7c5860c425dba14845c09ccede39d <82d65f7ef11edcea0228745440b8b4b1f222c34c || >=89fac11cb3e7c5860c425dba14845c09ccede39d <5ea299c3aa42a827f6a863eeead6de3525bbb17a || >=89fac11cb3e7c5860c425dba14845c09ccede39d <cb0b7f9c43b0abbd422a7e4c2c85e91db429207c | 2c4c4d7cadd10b50b5489183bbbb9eb95f6f8344, 4dc1518f9cc57c6db99514cafeb02dd7117d5bda, 1325975a2eab265510e6036d8bf0c0068373d332, 1a42bd72a66205e439db1d1142442b62d393408a, 38e6b5ce5794ff09442231cc171c2be5e900bab3, 82d65f7ef11edcea0228745440b8b4b1f222c34c, 5ea299c3aa42a827f6a863eeead6de3525bbb17a, cb0b7f9c43b0abbd422a7e4c2c85e91db429207c |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.