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| author | Pan Bian <bianpan2016@163.com> | 2018-11-22 18:00:16 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-11-29 14:53:59 +0800 |
| commit | 046f6e8adfd37049d578844eeb06ed093805783b (patch) | |
| tree | 9ae22c1a7296af6aa2273683b7805da2296632e0 /crypto/Kconfig | |
| parent | f5dc455f1b0548b15904e18be717c6f85f1c446d (diff) | |
| download | linux-crypto-046f6e8adfd37049d578844eeb06ed093805783b.tar.gz linux-crypto-046f6e8adfd37049d578844eeb06ed093805783b.zip | |
crypto: do not free algorithm before using
In multiple functions, the algorithm fields are read after its reference
is dropped through crypto_mod_put. In this case, the algorithm memory
may be freed, resulting in use-after-free bugs. This patch delays the
put operation until the algorithm is never used.
Fixes: cd89eb27bee6 ("crypto: cbc - Convert to skcipher")
Fixes: df5fcebba63e ("crypto: cfb - add support for Cipher FeedBack mode")
Fixes: 469cb2e223ed ("crypto: pcbc - Convert to skcipher")
Cc: <stable@vger.kernel.org>
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Kconfig')
0 files changed, 0 insertions, 0 deletions