diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/dh_helper.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/crypto/dh_helper.c b/crypto/dh_helper.c index 788a9e572918..24fdb2ecaa85 100644 --- a/crypto/dh_helper.c +++ b/crypto/dh_helper.c @@ -83,6 +83,14 @@ int crypto_dh_decode_key(const char *buf, unsigned int len, struct dh *params) if (secret.len != crypto_dh_key_len(params)) return -EINVAL; + /* + * Don't permit the buffer for 'key' or 'g' to be larger than 'p', since + * some drivers assume otherwise. + */ + if (params->key_size > params->p_size || + params->g_size > params->p_size) + return -EINVAL; + /* Don't allocate memory. Set pointers to data within * the given buffer */ |