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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2019-11-19 17:41:31 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-12-11 16:34:45 +0800 |
| commit | b61ad212689fc7ef61f32112a0ffddfcbc8a6159 (patch) | |
| tree | d9babdb6dab9b8fab726ab17ee04e7fd0aed79a7 | |
| parent | d34dbafdc1260d158a3ff7dac3edb06b680ee343 (diff) | |
| download | linux-crypto-b61ad212689fc7ef61f32112a0ffddfcbc8a6159.tar.gz linux-crypto-b61ad212689fc7ef61f32112a0ffddfcbc8a6159.zip | |
crypto: pcrypt - Fix user-after-free on module unload
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: fa0657180cb8 ("crypto: pcrypt - Add pcrypt crypto...")
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/pcrypt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c index 543792e0..81bbea7f 100644 --- a/crypto/pcrypt.c +++ b/crypto/pcrypt.c @@ -362,11 +362,12 @@ 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); } subsys_initcall(pcrypt_init); |