ACK: [SRU][J][PATCH 0/1] CVE-2024-26700

[Alice C. Munduruca]

On 03/09/2025 15:45, Chris Chiu wrote:
> https://ubuntu.com/security/CVE-2024-26700
> 
> [ Impact ]
> 
> drm/amd/display: Fix MST Null Ptr for RV
> 
> The change try to fix the kernel NULL pointer dereference
> specific to RV platform. With a second DP monitor connected,
> drm_atomic_state in dm atomic check sequence does not include
> the connector state for the old/existing/first DP monitor.
> In such case, dsc determination policy would hit a null ptr when
> it tries to iterate the old/existing stream that does not have a
> valid connector state attached to it.
> 
> [ Fix ]
> 
> Plucky: Not affected
> Oracular: Not affected
> Noble: Not affected
> Jammy: Backported - context conflict for the ret value handling
> Focal: Won't fix
> 
> [ Test Plan ]
> 1. Boot a machine with AMD Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] 
> 2. Simply booting the system with 2 external monitors attached (via USB adapter).
> 3. System should not be frozon.
> 
> 
> [ Where Problems Could Occur ]
> A regression here is unlikely due to the very limited scope
> of the patch.
> 
> Fangzhi Zuo (1):
>   drm/amd/display: Fix MST Null Ptr for RV
> 
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
> 
> -- 
> 2.34.1

Acked-by: Alice C. Munduruca <alice.munduruca at canonical.com>