CVE-2025-37935 net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM

Critical 9.8 Published Updated

A flaw in the MediaTek Ethernet driver causes a kernel panic when processing specific descriptors on systems with 4GB+ RAM, leading to denial of service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2025-37935?

CVE-2025-37935 is a critical vulnerability in Linux kernel, published on 20 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM

If the mtk_poll_rx() function detects the MTK_RESETTING flag, it will jump to release_desc and refill the high word of the SDP on the 4GB RFB. Subsequently, mtk_rx_clean will process an incorrect SDP, leading to a panic.

Add patch from MediaTek's SDK to resolve this.

Which versions are affected by CVE-2025-37935?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-37935?

Apply the vendor's patch.

Is CVE-2025-37935 being exploited?

There is no known exploitation of CVE-2025-37935 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2025-37935, DEBIAN-CVE-2025-37935, GHSA-w7gx-c3g5-hw6x, ROOT-OS-UBUNTU-2404-CVE-2025-37935, UBUNTU-CVE-2025-37935.

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