ACK: [SRU][J][PATCH 0/1] CVE-2024-53068

[Manuel Diewald]

On Wed, Oct 01, 2025 at 05:40:07PM -0400, Alice C. Munduruca wrote:
> [ Impact ]
> 
> A use-after-free bug is possible in the arm_scmi firmware,
> since the `->name` attribute of `scmi_dev` is freed before the
> whole truly falls out of usage. The solution is thus to not
> prematurely free this value, and only do so when it is safe, i.e.
> when `scmi_device_release` is called.
> 
> [ Fix ]
> 
> jammy: backported from the upstream commit, applying diff over
>        the changes to `scmi_device_destroy` and
>        `scmi_device_create`.
> 
> [ Tests ]
> 
> Compile and boot tested.
> 
> [ Where problems could occur ]
> 
> The changes should be sound and cause no leaks when the device is
> released, although this could be one of the only potential
> regressions, since now the memory deallocation occurs at that
> point. The minimal scope of changes also limits the possibility
> of major regressions.
> 
> 
> Xinqi Zhang (1):
>   firmware: arm_scmi: Fix slab-use-after-free in scmi_bus_notifier()
> 
>  drivers/firmware/arm_scmi/bus.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> -- 
> 2.48.1
> 
> 
> -- 
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team

Acked-by: Manuel Diewald <manuel.diewald at canonical.com>

-- 
 Manuel
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