CVE-2021-46943: media: staging/intel-ipu3: Fix set_fmt error handling

Severity: high (CVSS 7.8 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: 2024-02-27 · updated 2026-06-17
Weakness: CWE-131

Description

In the Linux kernel, the following vulnerability has been resolved: media: staging/intel-ipu3: Fix set_fmt error handling If there in an error during a set_fmt, do not overwrite the previous sizes with the invalid config. Without this patch, v4l2-compliance ends up allocating 4GiB of RAM and causing the following OOPs [ 38.662975] ipu3-imgu 0000:00:05.0: swiotlb buffer is full (sz: 4096 bytes) [ 38.662980] DMA: Out of SW-IOMMU space for 4096 bytes at device 0000:00:05.0 [ 38.663010] general protection fault: 0000 [#1] PREEMPT SMP

Affected products

Linux kernel: from 5.2.0 before 5.4.118; from 5.5.0 before 5.10.36; from 5.11.0 before 5.11.20; from 5.12.0 before 5.12.3 — fixed in 5.10.36, 5.11.20, 5.12.3, 5.4.118

How to fix

Upgrade to a fixed version: Linux kernel 5.10.36, 5.11.20, 5.12.3, 5.4.118. Check the vendor advisory for mitigations.

References

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