APPLIED[N:hwe-6.17]: [SRU][Q][PATCH 0/1] CVE-2026-53215

[Edoardo Canepa]

Applied to n:linux/hwe-6.17-next. Thanks.

On 7/17/26 05:48, Cengiz Can via kernel-team wrote:
> https://ubuntu.com/security/CVE-2026-53215
>
> [ Impact ]
>
> The mvpp2 network driver's RX error path returns the current descriptor buffer
> to the hardware BM pool, but this is only valid while the driver still owns the
> buffer. When mvpp2_rx_refill() fails after the current buffer has been handed
> to XDP or attached to an skb, the buffer may have already been recycled,
> redirected, queued for XDP_TX, or freed. Returning such a buffer to the BM pool
> lets hardware DMA into memory that is no longer owned by the RX ring, leading
> to memory corruption. This has a CVSS score of 9.8.
>
> [ Fix ]
>
> questing: clean cherry-pick
>
> [ Test Plan ]
>
> Boot tested.
>
> [ Where Problems Could Occur ]
>
> A regression in this fix could affect packet reception and buffer management in
> the mvpp2 Ethernet driver, potentially causing packet drops, buffer pool
> depletion, or memory handling errors on Marvell PPv2 network hardware.
>
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