APPLIED: [SRU][J:linux-azure/N:linux-azure/Q:linux-azure/R:linux-azure/][PATCH 0/1] azure: backport "net: mana: validate rx_req_idx to prevent out-of-bounds array access"

[Vinicius Peixoto]

On Thu Jun 18, 2026 at 5:36 PM -03, Vinicius Peixoto wrote:
> BugLink: https://bugs.launchpad.net/bugs/2157545
>
> [Impact]
>
> Microsoft has requested a backport of an upstream commit that fixes an out-of-bounds access in mana_hwc_rx_event_handler().
>
> [Fix]
>
> Backport the following upstream commit to all Azure kernels > 5.15:
> b809d0409991: "net: mana: validate rx_req_idx to prevent out-of-bounds array access"
>
> [Test Plan]
>
> Compile + boot tested, Microsoft to run further validation on their side.
>
> [Regression potential]
>
> This patch is isolated to the MANA driver, thus having a low regression potential; although it shouldn't cause any issues, regressions here might manifest as performance degradation or crashes in the MANA driver.
>
> [Other info]
>
> SF#00439438
>
> Aditya Garg (1):
>   net: mana: validate rx_req_idx to prevent out-of-bounds array access
>
>  drivers/net/ethernet/microsoft/mana/hw_channel.c | 6 ++++++
>  1 file changed, 6 insertions(+)

Applied to the R/Q/N:azure trees (J:azure got this patch through stable
updates).

Thanks,
Vinicius