ACK: [SRU][Q][PATCH 0/1] CVE-2026-53045

[Bethany Jamison]

On 7/16/26 6:30 PM, Cengiz Can via kernel-team wrote:
> https://ubuntu.com/security/CVE-2026-53045
>
> [ Impact ]
>
> The Tegra124 external memory controller (EMC) driver contained a reversed check
> when determining whether a specified memory timing enables DLL in the EMRS
> register. DLL is enabled when bit A0 is low, but the code tested the condition
> backwards. This could cause the driver to apply incorrect DLL configuration
> during memory timing changes, potentially leading to memory instability on
> affected Tegra124 platforms.
>
> [ Fix ]
>
> questing: clean cherry-pick
> focal: clean cherry-pick
> bionic: clean cherry-pick
> xenial: clean cherry-pick
>
> [ Test Plan ]
>
> Boot tested.
>
> [ Where Problems Could Occur ]
>
> A regression in this fix would affect the Tegra124 EMC memory controller
> driver, potentially causing incorrect DLL handling during memory frequency
> scaling and resulting in memory corruption or system instability on
> Tegra124-based hardware.
>
Signed-off-by: Bethany Jamison <bethany.jamison at canonical.com>