CVE-2025-71095

kernel: Linux kernel: `stmmac` driver denial of service via incorrect XDP memory handling

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · January 13, 2026

Updated · August 21, 2026

Description

A flaw was found in the Linux kernel's stmmac network driver. This vulnerability occurs when the kernel processes network packets using the zero-copy XDP (eXpress Data Path) transmit feature. An incorrect memory type handling can lead to invalid memory mappings, which in turn causes a kernel panic and results in a denial of service (DoS) for the system.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')