CVE-2026-74685
CVE CVE-2026-74685EUVD EUVD-2026-64372Published 2026-08-22T15:32:51.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: hwmon: (ltc4282) Clamp negative current limits When a negative value is passed to ltc4282_write_curr(), the signed long val is cast directly to u64: drivers/hwmon/ltc4282.c:ltc4282_write_curr() { /* need to pass it in millivolt */ u32 in = DIV_ROUND_CLOSEST_ULL((u64)val * st->rsense, DECA * MICRO); ... } This cast converts negative inputs into large positive values. The subsequent division result overflows the u32 in variable, truncating to a pseudo-random positive value. When this is passed to ltc4282_write_voltage_byte(), it is clamped to the maximum limit instead of zero. Clamp val to 0 and to the maximum supported upper limit before the cast and assign the result to a 64-bit temporary variable before the division to avoid the underflow and an also possible overflow.
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 cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 <046e56b53c09375ef39903514496aa5508db9729; cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 <e253dd5f9f6d875a317895bf43ec9534ed7523cb; patch: 7.2; patch: 6.12.104; cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 <60e06c4dba696173982393252a40ceb7dd2eec18; patch: 7.1.9; patch: 0; patch: 6.18.45; cbc29538dbf7d7400f1ffc5dd5713e6a551463a0 <de58b90a4d1417c15b693eb04c0ce6bc925d84c6; 6.9
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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