CVE-2024-26684: net: stmmac: xgmac: fix handling of DPP safety error for DMA channels

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-04-02 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: xgmac: fix handling of DPP safety error for DMA channels Commit 56e58d6c8a56 ("net: stmmac: Implement Safety Features in XGMAC core") checks and reports safety errors, but leaves the Data Path Parity Errors for each channel in DMA unhandled at all, lead to a storm of interrupt. Fix it by checking and clearing the DMA_DPP_Interrupt_Status register.

Affected products

Debian Linux: 10.0
Linux kernel: from 5.4 before 5.4.269; from 5.5 before 5.10.210; from 5.11 before 5.15.149; from 5.16 before 6.1.78; from 6.2 before 6.6.17; from 6.7 before 6.7.5 — fixed in 5.10.210, 5.15.149, 5.4.269, 6.1.78, 6.6.17, 6.7.5

How to fix

Upgrade to a fixed version: Linux kernel 5.10.210, 5.15.149, 5.4.269, 6.1.78. Check the vendor advisory for mitigations.

References

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