Re: [PATCH net v2] net: dsa: realtek: fix out-of-bounds access

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Thu, 23 Mar 2023 11:37:35 +0100 you wrote:
> The probe function sets priv->chip_data to (void *)priv + sizeof(*priv)
> with the expectation that priv has enough trailing space.
> 
> However, only realtek-smi actually allocated this chip_data space.
> Do likewise in realtek-mdio to fix out-of-bounds accesses.
> 
> These accesses likely went unnoticed so far, because of an (unused)
> buf[4096] member in struct realtek_priv, which caused kmalloc to
> round up the allocated buffer to a big enough size, so nothing of
> value was overwritten. With a different allocator (like in the barebox
> bootloader port of the driver) or with KASAN, the memory corruption
> becomes quickly apparent.
> 
> [...]

Here is the summary with links:
  - [net,v2] net: dsa: realtek: fix out-of-bounds access
    https://git.kernel.org/netdev/net/c/b93eb5648693

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html