From b0576ade3aaf24b376ea1a4406ae138e2a22b0c0 Mon Sep 17 00:00:00 2001 From: Jiasheng Jiang Date: Fri, 27 Jan 2023 10:40:06 +0000 Subject: [PATCH] nvmem: brcm_nvram: Add check for kzalloc Add the check for the return value of kzalloc in order to avoid NULL pointer dereference. Fixes: 6e977eaa8280 ("nvmem: brcm_nvram: parse NVRAM content into NVMEM cells") Cc: stable@vger.kernel.org Signed-off-by: Jiasheng Jiang Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20230127104015.23839-2-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/nvmem/brcm_nvram.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/nvmem/brcm_nvram.c +++ b/drivers/nvmem/brcm_nvram.c @@ -97,6 +97,9 @@ static int brcm_nvram_parse(struct brcm_ len = le32_to_cpu(header.len); data = kzalloc(len, GFP_KERNEL); + if (!data) + return -ENOMEM; + memcpy_fromio(data, priv->base, len); data[len - 1] = '\0';