Vulnerability CVE-2021-46943
Published: 2024-02-27

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

 References:
https://git.kernel.org/stable/c/a03fb1e8a110658215a4cefc3e2ad53279e496a6
https://git.kernel.org/stable/c/c6b81b897f6f9445d57f8d47c4e060ec21556137
https://git.kernel.org/stable/c/34892ea938387d83ffcfb7775ec55f0f80767916
https://git.kernel.org/stable/c/6fb617e37a39db0a3eca4489431359d0bdf3b9bc
https://git.kernel.org/stable/c/ad91849996f9dd79741a961fd03585a683b08356
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