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Medium 5.5Published Oct 9, 2025

CVE-2025-39954clk: sunxi-ng: mp: Fix dual-divider clock rate readback

Updated under an hour ago ()

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

In the Linux kernel, the following vulnerability has been resolved: clk: sunxi-ng: mp: Fix dual-divider clock rate readback When dual-divider clock support was introduced, the P divider offset was left out of the .recalc_rate readback function. This causes the clock rate to become bogus or even zero (possibly due to the P divider being 1, leading to a divide-by-zero). Fix this by incorporating the P divider offset into the calculation.

CVSS
5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
Not given
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Linux
NVD analysis
Analyzed
Record last updated
May 11, 2026
First seen by InfoSec Signals
Oct 19, 2026

Affected products

Affected products
Linux Linux
linux:linux (from the name)
45717804b75eda8a76eacc04509ca4d68dd2caaf builds before 40108f69c372af3aea73e7829d6849a44638d662; 45717804b75eda8a76eacc04509ca4d68dd2caaf builds before 25fbbaf515acd13399589bd5ee6de5f35740cef2
CNA record
linux linux_kernel
linux:linux_kernel
from 6.15 before 6.16.9; 6.17; 6.17; 6.17; 6.17; 6.17; 6.17
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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