CVE-2025-38125 net: stmmac: make sure that ptp_rate is not 0 before configuring EST

What is CVE-2025-38125?

CVE-2025-38125 is a medium-severity denial of service vulnerability in Linux kernel, published on 3 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Which versions are affected by CVE-2025-38125?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-38125?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-38125 being exploited?

There is no known exploitation of CVE-2025-38125 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-64535, AZL-70633, BELL-CVE-2025-38125, DEBIAN-CVE-2025-38125, GHSA-vr36-j5gc-36m5, ROOT-OS-DEBIAN-11-CVE-2025-38125 and 4 more.