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| author | Vincent Whitchurch <vincent.whitchurch@axis.com> | 2019-07-02 09:53:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-10 09:53:41 +0200 |
| commit | ae3fa28f09380836e336c236851ff7375c3af590 (patch) | |
| tree | 2e301441dcb1c71d5c97b7efb21ddce405d2e611 | |
| parent | 015c20532ace63c6b2d27326430f2fd177306003 (diff) | |
| download | linux-stable-ae3fa28f09380836e336c236851ff7375c3af590.tar.gz | |
crypto: cryptd - Fix skcipher instance memory leak
commit 1a0fad630e0b7cff38e7691b28b0517cfbb0633f upstream.
cryptd_skcipher_free() fails to free the struct skcipher_instance
allocated in cryptd_create_skcipher(), leading to a memory leak. This
is detected by kmemleak on bootup on ARM64 platforms:
unreferenced object 0xffff80003377b180 (size 1024):
comm "cryptomgr_probe", pid 822, jiffies 4294894830 (age 52.760s)
backtrace:
kmem_cache_alloc_trace+0x270/0x2d0
cryptd_create+0x990/0x124c
cryptomgr_probe+0x5c/0x1e8
kthread+0x258/0x318
ret_from_fork+0x10/0x1c
Fixes: 4e0958d19bd8 ("crypto: cryptd - Add support for skcipher")
Cc: <stable@vger.kernel.org>
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | crypto/cryptd.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/crypto/cryptd.c b/crypto/cryptd.c index addca7bae33f4..e0c8e907b0867 100644 --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -586,6 +586,7 @@ static void cryptd_skcipher_free(struct skcipher_instance *inst) struct skcipherd_instance_ctx *ctx = skcipher_instance_ctx(inst); crypto_drop_skcipher(&ctx->spawn); + kfree(inst); } static int cryptd_create_skcipher(struct crypto_template *tmpl, |