ACK: [SRU][M][PATCH 0/1] CVE-2024-26790

[Tim Gardner]

On 5/3/24 10:31 AM, Bethany Jamison wrote:
> [Impact]
> 
>   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 ).
> 
> [Fix]
> 
> Mantic:	Clean cherry-pick from linux-6.6.y
> Jammy:	pending
> Focal:	pending
> Bionic:	not-affected
> Xenial:	not-affected
> Trusty:	not-affected
> 
> [Test Case]
> 
> Compile and boot tested.
> 
> [Where issues could occur]
> 
> This fix affects those who use the NXP Layerscape Queue Direct Memory
> Access Controller driver, an issue with this fix would be visable to
> the user via an unresponsive system or a system crash.
> 
> Peng Ma (1):
>    dmaengine: fsl-qdma: fix SoC may hang on 16 byte unaligned read
> 
>   drivers/dma/fsl-qdma.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
Acked-by: Tim Gardner <tim.gardner at canonical.com>
-- 
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Tim Gardner
Canonical, Inc