CVE-2024-43852: hwmon: (ltc2991) re-order conditions to fix off by one bug

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-08-17 · updated 2026-06-17
Weakness: CWE-193

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (ltc2991) re-order conditions to fix off by one bug LTC2991_T_INT_CH_NR is 4. The st->temp_en[] array has LTC2991_MAX_CHANNEL (4) elements. Thus if "channel" is equal to LTC2991_T_INT_CH_NR then we have read one element beyond the end of the array. Flip the conditions around so that we check if "channel" is valid before using it as an array index.

Affected products

Linux kernel: from 6.7 before 6.10.3 — fixed in 6.10.3

How to fix

Upgrade to a fixed version: Linux kernel 6.10.3. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2024-43852 or the next vulnerability affects your stack