Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 04:02:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

crypto: akcipher - Do not copy dst if it is NULL

Browse Source 
As signature verification has a NULL destination buffer, the pointer
needs to be checked before the memcpy is done.

Fixes: addde1f2c9 ("crypto: akcipher - Add sync interface without SG lists")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2023-06-27 17:59:32 +08:00
parent 891ebfdfa3
commit 486bfb0591
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
crypto/akcipher.c
View File

@ -234,7 +234,8 @@ EXPORT_SYMBOL_GPL(crypto_akcipher_sync_prep);
int crypto_akcipher_sync_post(struct crypto_akcipher_sync_data *data, int err)
{
err = crypto_wait_req(err, &data->cwait);
memcpy(data->dst, data->buf, data->dlen);
if (data->dst)
memcpy(data->dst, data->buf, data->dlen);
data->dlen = data->req->dst_len;
kfree_sensitive(data->req);
return err;