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authorStephan Mueller <smueller@chronox.de>2017-09-14 18:10:28 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2017-09-20 12:42:29 +0300
commitbd6227a150fdb56e7bb734976ef6e53a2c1cb334 (patch)
treea9944827084eba41168a6a96833f06c6b134afc5 /crypto/drbg.c
parent2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e (diff)
downloadlinux-bd6227a150fdb56e7bb734976ef6e53a2c1cb334.tar.xz
crypto: drbg - fix freeing of resources
During the change to use aligned buffers, the deallocation code path was not updated correctly. The current code tries to free the aligned buffer pointer and not the original buffer pointer as it is supposed to. Thus, the code is updated to free the original buffer pointer and set the aligned buffer pointer that is used throughout the code to NULL. Fixes: 3cfc3b9721123 ("crypto: drbg - use aligned buffers") CC: <stable@vger.kernel.org> CC: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/drbg.c')
-rw-r--r--crypto/drbg.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/crypto/drbg.c b/crypto/drbg.c
index 633a88e93ab0..70018397e59a 100644
--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -1133,10 +1133,10 @@ static inline void drbg_dealloc_state(struct drbg_state *drbg)
{
if (!drbg)
return;
- kzfree(drbg->V);
- drbg->Vbuf = NULL;
- kzfree(drbg->C);
- drbg->Cbuf = NULL;
+ kzfree(drbg->Vbuf);
+ drbg->V = NULL;
+ kzfree(drbg->Cbuf);
+ drbg->C = NULL;
kzfree(drbg->scratchpadbuf);
drbg->scratchpadbuf = NULL;
drbg->reseed_ctr = 0;