Daniele Alessandrelli a53ab94eb6 crypto: ecdh_helper - Ensure 'len >= secret.len' in decode_key() ...

The length ('len' parameter) passed to crypto_ecdh_decode_key() is never
checked against the length encoded in the passed buffer ('buf'
parameter). This could lead to an out-of-bounds access when the passed
length is less than the encoded length.

Add a check to prevent that.

Fixes: 3c4b23901a ("crypto: ecdh - Add ECDH software support")
Signed-off-by: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2021-02-10 17:55:57 +11:00

2.1 KiB

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