Bug 2376088 (CVE-2025-38125)

Summary: CVE-2025-38125 kernel: net: stmmac: make sure that ptp_rate is not 0 before configuring EST
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-07-03 09:04:27 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: stmmac: make sure that ptp_rate is not 0 before configuring EST

If the ptp_rate recorded earlier in the driver happens to be 0, this
bogus value will propagate up to EST configuration, where it will
trigger a division by 0.

Prevent this division by 0 by adding the corresponding check and error
code.
Comment 1 Avinash Hanwate 2025-07-03 15:05:57 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025070328-CVE-2025-38125-8a6b@gregkh/T