CVE-2022-49186: clk: visconti: prevent array overflow in visconti_clk_register_gates()

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: 2025-02-26 · updated 2026-06-17
Weakness: CWE-129

Description

In the Linux kernel, the following vulnerability has been resolved: clk: visconti: prevent array overflow in visconti_clk_register_gates() This code was using -1 to represent that there was no reset function. Unfortunately, the -1 was stored in u8 so the if (clks[i].rs_id >= 0) condition was always true. This lead to an out of bounds access in visconti_clk_register_gates().

Affected products

Linux kernel: from 5.17 before 5.17.2 — fixed in 5.17.2

How to fix

Upgrade to a fixed version: Linux kernel 5.17.2. Check the vendor advisory for mitigations.

References

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