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authorHerbert Xu <herbert@gondor.apana.org.au>2015-04-07 21:27:01 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2015-04-08 22:20:06 +0800
commit016baaa1183bb0c5fb2a7de42413bba8a51c1bc8 (patch)
treeb6a1705e4cf6a1d504532630fe923ef261f6b2a5 /crypto/tcrypt.h
parent9cd223239a79df3cc758ecabb8473ca91599021b (diff)
downloadlinux-016baaa1183bb0c5fb2a7de42413bba8a51c1bc8.tar.gz
crypto: user - Fix crypto_alg_match race
The function crypto_alg_match returns an algorithm without taking
any references on it.  This means that the algorithm can be freed
at any time, therefore all users of crypto_alg_match are buggy.

This patch fixes this by taking a reference count on the algorithm
to prevent such races.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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