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| author | Pan Bian <bianpan2016@163.com> | 2016-12-01 10:04:43 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-12-01 21:06:43 +0800 |
| commit | e2c1b82330bcd77ffeb6dc5a18a4c6ce8d3e1fd3 (patch) | |
| tree | caf2188d54cd65ebbe14d8d3ac8227aec0032b4a /crypto | |
| parent | 37d8468108efb19b80aa8484534f8850ed60dbfb (diff) | |
| download | linux-e2c1b82330bcd77ffeb6dc5a18a4c6ce8d3e1fd3.tar.gz linux-e2c1b82330bcd77ffeb6dc5a18a4c6ce8d3e1fd3.tar.xz | |
crypto: algif_skcipher - set error code when kcalloc fails
Fix bug https://bugzilla.kernel.org/show_bug.cgi?id=188521. In function
skcipher_recvmsg_async(), variable err takes the return value, and its
value should be negative on failures. Because variable err may be
reassigned and checked before calling kcalloc(), its value may be 0
(indicates no error) even if kcalloc() fails. This patch fixes the bug
by explicitly assigning -ENOMEM to err when kcalloc() returns a NULL
pointer.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/algif_skcipher.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index 28556fce4267..bfb0a1a2507a 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -566,8 +566,10 @@ static int skcipher_recvmsg_async(struct socket *sock, struct msghdr *msg, * need to expand */ tmp = kcalloc(tx_nents * 2, sizeof(*tmp), GFP_KERNEL); - if (!tmp) + if (!tmp) { + err = -ENOMEM; goto free; + } sg_init_table(tmp, tx_nents * 2); for (x = 0; x < tx_nents; x++) |