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crypto: pcrypt - Fix user-after-free on module unload

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[ Upstream commit 07bfd9bdf5 ]

On module unload of pcrypt we must unregister the crypto algorithms
first and then tear down the padata structure.  As otherwise the
crypto algorithms are still alive and can be used while the padata
structure is being freed.

Fixes: 5068c7a883 ("crypto: pcrypt - Add pcrypt crypto...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Herbert Xu
2019-11-19 17:41:31 +08:00
committed by Greg Kroah-Hartman
parent cc071b7c43
commit 47ef5cb878
1 changed files with 2 additions and 1 deletions
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3
crypto/pcrypt.c
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@@ -505,11 +505,12 @@ err:
static void __exit pcrypt_exit(void)
{
crypto_unregister_template(&pcrypt_tmpl);
pcrypt_fini_padata(&pencrypt);
pcrypt_fini_padata(&pdecrypt);
kset_unregister(pcrypt_kset);
crypto_unregister_template(&pcrypt_tmpl);
}
module_init(pcrypt_init);