CVE-2023-52882: clk: sunxi-ng: h6: Reparent CPUX during PLL CPUX rate change

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-30 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: clk: sunxi-ng: h6: Reparent CPUX during PLL CPUX rate change While PLL CPUX clock rate change when CPU is running from it works in vast majority of cases, now and then it causes instability. This leads to system crashes and other undefined behaviour. After a lot of testing (30+ hours) while also doing a lot of frequency switches, we can't observe any instability issues anymore when doing reparenting to stable clock like 24 MHz oscillator.

Affected products

Debian Linux: 10.0
Linux kernel: from 4.17 before 5.4.276; from 5.5 before 5.10.217; from 5.11 before 5.15.159; from 5.16 before 6.1.91; from 6.2 before 6.6.31; from 6.7 before 6.8.10 — fixed in 5.10.217, 5.15.159, 5.4.276, 6.1.91, 6.6.31, 6.8.10

How to fix

Upgrade to a fixed version: Linux kernel 5.10.217, 5.15.159, 5.4.276, 6.1.91. Check the vendor advisory for mitigations.

References

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