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| author | Tianjia Zhang <tianjia.zhang@linux.alibaba.com> | 2020-09-21 00:20:59 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-09-25 17:48:54 +1000 |
| commit | 2b40386774831c9617325ca8940fb3c270cbb086 (patch) | |
| tree | fd5ffe947839c62b0c9fb67f8970ba157a25a389 | |
| parent | a1f62c217d9c371187dd14d2e1370923aae58994 (diff) | |
| download | linux-2b40386774831c9617325ca8940fb3c270cbb086.tar.gz linux-2b40386774831c9617325ca8940fb3c270cbb086.tar.bz2 linux-2b40386774831c9617325ca8940fb3c270cbb086.zip | |
crypto: testmgr - Fix potential memory leak in test_akcipher_one()
When the 'key' allocation fails, the 'req' will not be released,
which will cause memory leakage on this path. This patch adds a
'free_req' tag used to solve this problem, and two new err values
are added to reflect the real reason of the error.
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/testmgr.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/crypto/testmgr.c b/crypto/testmgr.c index d084de4c60f2..21f2878e4e54 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -3955,7 +3955,7 @@ static int test_akcipher_one(struct crypto_akcipher *tfm, key = kmalloc(vecs->key_len + sizeof(u32) * 2 + vecs->param_len, GFP_KERNEL); if (!key) - goto free_xbuf; + goto free_req; memcpy(key, vecs->key, vecs->key_len); ptr = key + vecs->key_len; ptr = test_pack_u32(ptr, vecs->algo); @@ -3967,7 +3967,7 @@ static int test_akcipher_one(struct crypto_akcipher *tfm, else err = crypto_akcipher_set_priv_key(tfm, key, vecs->key_len); if (err) - goto free_req; + goto free_key; /* * First run test which do not require a private key, such as @@ -3977,7 +3977,7 @@ static int test_akcipher_one(struct crypto_akcipher *tfm, out_len_max = crypto_akcipher_maxsize(tfm); outbuf_enc = kzalloc(out_len_max, GFP_KERNEL); if (!outbuf_enc) - goto free_req; + goto free_key; if (!vecs->siggen_sigver_test) { m = vecs->m; @@ -3996,6 +3996,7 @@ static int test_akcipher_one(struct crypto_akcipher *tfm, op = "verify"; } + err = -E2BIG; if (WARN_ON(m_size > PAGE_SIZE)) goto free_all; memcpy(xbuf[0], m, m_size); @@ -4062,6 +4063,7 @@ static int test_akcipher_one(struct crypto_akcipher *tfm, c_size = req->dst_len; } + err = -E2BIG; op = vecs->siggen_sigver_test ? "sign" : "decrypt"; if (WARN_ON(c_size > PAGE_SIZE)) goto free_all; @@ -4098,9 +4100,10 @@ static int test_akcipher_one(struct crypto_akcipher *tfm, free_all: kfree(outbuf_dec); kfree(outbuf_enc); +free_key: + kfree(key); free_req: akcipher_request_free(req); - kfree(key); free_xbuf: testmgr_free_buf(xbuf); return err; |