From: George Rurikov <g.ryurikov@securitycode.ru>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: MrRurikov <grurikovsherbakov@yandex.ru>,
"David S . Miller" <davem@davemloft.net>,
<linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<lvc-project@linuxtesting.org>, <stable@vger.kernel.org>
Subject: [PATCH] crypto: Fix logical operator in _aead_recvmsg()
Date: Mon, 16 Sep 2024 10:44:22 +0300 [thread overview]
Message-ID: <20240916074422.503645-1-g.ryurikov@securitycode.ru> (raw)
From: MrRurikov <grurikovsherbakov@yandex.ru>
After having been compared to a NULL value at algif_aead.c:191, pointer
'tsgl_src' is passed as 2nd parameter in call to function
'crypto_aead_copy_sgl' at algif_aead.c:244, where it is dereferenced at
algif_aead.c:85.
Change logical operator from && to || because pointer 'tsgl_src' is NULL,
then 'proccessed' will still be non-null
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Cc: stable@vger.kernel.org
Fixes: 2d97591ef43d ("crypto: af_alg - consolidation of duplicate code")
Signed-off-by: MrRurikov <grurikovsherbakov@yandex.ru>
---
crypto/algif_aead.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c
index 7d58cbbce4af..135f09a4b3f8 100644
--- a/crypto/algif_aead.c
+++ b/crypto/algif_aead.c
@@ -191,7 +191,7 @@ static int _aead_recvmsg(struct socket *sock, struct msghdr *msg,
if (tsgl_src)
break;
}
- if (processed && !tsgl_src) {
+ if (processed || !tsgl_src) {
err = -EFAULT;
goto free;
}
--
2.34.1
Заявление о конфиденциальности
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next reply other threads:[~2024-09-16 8:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-16 7:44 George Rurikov [this message]
2024-09-16 8:33 ` [PATCH] crypto: Fix logical operator in _aead_recvmsg() Greg KH
2024-09-16 8:38 ` Herbert Xu
2024-09-16 14:14 ` Stephan Mueller
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