CVE-2026-74547
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
hwmon: (adt7470) Fix busy-loop and I2C flooding in update thread
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 89fac11cb3e7c5860c425dba14845c09ccede39d | affected | git | 2c4c4d7cadd10b50b5489183bbbb9eb95f6f8344 | Unavailable | None listed |
| 89fac11cb3e7c5860c425dba14845c09ccede39d | affected | git | 4dc1518f9cc57c6db99514cafeb02dd7117d5bda | Unavailable | None listed |
| 89fac11cb3e7c5860c425dba14845c09ccede39d | affected | git | 1325975a2eab265510e6036d8bf0c0068373d332 | Unavailable | None listed |
| 89fac11cb3e7c5860c425dba14845c09ccede39d | affected | git | 1a42bd72a66205e439db1d1142442b62d393408a | Unavailable | None listed |
| 89fac11cb3e7c5860c425dba14845c09ccede39d | affected | git | 38e6b5ce5794ff09442231cc171c2be5e900bab3 | Unavailable | None listed |
| 89fac11cb3e7c5860c425dba14845c09ccede39d | affected | git | 82d65f7ef11edcea0228745440b8b4b1f222c34c | Unavailable | None listed |
| 89fac11cb3e7c5860c425dba14845c09ccede39d | affected | git | 5ea299c3aa42a827f6a863eeead6de3525bbb17a | Unavailable | None listed |
| 89fac11cb3e7c5860c425dba14845c09ccede39d | affected | git | cb0b7f9c43b0abbd422a7e4c2c85e91db429207c | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.29 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.29 | Unavailable | None listed |
| 5.10.265 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.216 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.183 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.151 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.103 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.44 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.8 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |