ACK: [SRU][Q][PATCH 0/1] CVE-2026-53215

[Tim Whisonant]

On Fri, Jul 17, 2026 at 06:48:30AM +0300, 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.
> 

Acked-by: Tim Whisonant <tim.whisonant at canonical.com>