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| author | Wen Yang <wen.yang99@zte.com.cn> | 2019-07-08 09:19:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-04 10:33:26 +0300 |
| commit | c9a9f1bfdc454ad8c9564949ef686a6f9dc63f68 (patch) | |
| tree | e40105bda2bd2b235ef54788b2dbb6b9b264e61b /drivers/crypto | |
| parent | 16102fb921f297fa1fbb5561f2ddbd7271358ef7 (diff) | |
| download | linux-c9a9f1bfdc454ad8c9564949ef686a6f9dc63f68.tar.xz | |
crypto: crypto4xx - fix a potential double free in ppc4xx_trng_probe
commit 95566aa75cd6b3b404502c06f66956b5481194b3 upstream.
There is a possible double free issue in ppc4xx_trng_probe():
85: dev->trng_base = of_iomap(trng, 0);
86: of_node_put(trng); ---> released here
87: if (!dev->trng_base)
88: goto err_out;
...
110: ierr_out:
111: of_node_put(trng); ---> double released here
...
This issue was detected by using the Coccinelle software.
We fix it by removing the unnecessary of_node_put().
Fixes: 5343e674f32f ("crypto4xx: integrate ppc4xx-rng into crypto4xx")
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: <stable@vger.kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Allison Randal <allison@lohutok.net>
Cc: Armijn Hemel <armijn@tjaldur.nl>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/amcc/crypto4xx_trng.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_trng.c b/drivers/crypto/amcc/crypto4xx_trng.c index 368c5599515e..a194ee0ddbb6 100644 --- a/drivers/crypto/amcc/crypto4xx_trng.c +++ b/drivers/crypto/amcc/crypto4xx_trng.c @@ -111,7 +111,6 @@ void ppc4xx_trng_probe(struct crypto4xx_core_device *core_dev) return; err_out: - of_node_put(trng); iounmap(dev->trng_base); kfree(rng); dev->trng_base = NULL; |