From: Hector Martin marcan@marcan.st
commit d19d8e3ba256f81ea4a27209dbbd1f0a00ef1903 upstream.
If boardrev is missing from the NVRAM we add a default one, but this might need more space in the output buffer than was allocated. Ensure we have enough padding for this in the buffer.
Fixes: 46f2b38a91b0 ("brcmfmac: insert default boardrev in nvram data if missing") Reviewed-by: Arend van Spriel arend.vanspriel@broadcom.com Cc: stable@vger.kernel.org Signed-off-by: Hector Martin marcan@marcan.st Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Signed-off-by: Kalle Valo kvalo@kernel.org Link: https://lore.kernel.org/r/20220131160713.245637-3-marcan@marcan.st Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c @@ -216,6 +216,8 @@ static int brcmf_init_nvram_parser(struc size = BRCMF_FW_MAX_NVRAM_SIZE; else size = data_len; + /* Add space for properties we may add */ + size += strlen(BRCMF_FW_DEFAULT_BOARDREV) + 1; /* Alloc for extra 0 byte + roundup by 4 + length field */ size += 1 + 3 + sizeof(u32); nvp->nvram = kzalloc(size, GFP_KERNEL);