EUVD-2026-64372
GHSA-pg82-jq9q-m7pf
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Alert meAnalysisCVE.org
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.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Lifecycle Timeline
2Threat Intelligence Overview
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EPSS
How this decision was reached
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Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
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