nvmem: u-boot-env: error if NVMEM device is too small

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Verify data size before trying to parse it to avoid reading out of
buffer. This could happen in case of problems at MTD level or invalid DT
bindings.

Signed-off-by: John Thomson <git@johnthomson.fastmail.com.au>
Cc: stable <stable@kernel.org>
Fixes: d5542923f2 ("nvmem: add driver handling U-Boot environment variables")
[rmilecki: simplify commit description & rebase]
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240902142510.71096-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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John Thomson 2024-09-02 15:25:08 +01:00 • committed by Greg Kroah-Hartman

parent e8c276d4dc

commit 8679e8b4a1

1 changed files with 7 additions and 0 deletions

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drivers/nvmem/u-boot-env.c

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