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Re: brcmfmac: avoid potential stack overflow in brcmf_cfg80211_start_ap()

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Arend Van Spriel <arend.vanspriel@xxxxxxxxxxxx> wrote:
> User-space can choose to omit NL80211_ATTR_SSID and only provide raw
> IE TLV data. When doing so it can provide SSID IE with length exceeding
> the allowed size. The driver further processes this IE copying it
> into a local variable without checking the length. Hence stack can be
> corrupted and used as exploit.
> 
> Cc: stable@xxxxxxxxxxxxxxx # v4.7
> Reported-by: Daxing Guo <freener.gdx@xxxxxxxxx>
> Reviewed-by: Hante Meuleman <hante.meuleman@xxxxxxxxxxxx>
> Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@xxxxxxxxxxxx>
> Reviewed-by: Franky Lin <franky.lin@xxxxxxxxxxxx>
> Signed-off-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>

Thanks, 1 patch applied to wireless-drivers.git:

ded89912156b brcmfmac: avoid potential stack overflow in brcmf_cfg80211_start_ap()

-- 
Sent by pwcli
https://patchwork.kernel.org/patch/9313305/




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