CVE-2024-26790: dmaengine: fsl-qdma: fix SoC may hang on 16 byte unaligned read

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: 2024-04-04 · updated 2026-06-17
Weakness: CWE-667

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: fsl-qdma: fix SoC may hang on 16 byte unaligned read There is chip (ls1028a) errata: The SoC may hang on 16 byte unaligned read transactions by QDMA. Unaligned read transactions initiated by QDMA may stall in the NOC (Network On-Chip), causing a deadlock condition. Stalled transactions will trigger completion timeouts in PCIe controller. Workaround: Enable prefetch by setting the source descriptor prefetchable bit ( SD[PF] = 1 ). Implement this workaround.

Affected products

Debian Linux: 10.0
Linux kernel: from 5.1 before 5.4.271; from 5.5 before 5.10.212; from 5.11 before 5.15.151; from 5.16 before 6.1.81; from 6.2 before 6.6.21; from 6.7 before 6.7.9 — fixed in 5.10.212, 5.15.151, 5.4.271, 6.1.81, 6.6.21, 6.7.9

How to fix

Upgrade to a fixed version: Linux kernel 5.10.212, 5.15.151, 5.4.271, 6.1.81. Check the vendor advisory for mitigations.

References

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