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From: Dan Carpenter <dan.carpenter@oracle.com>
To: David Howells <dhowells@redhat.com>
Cc: linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org
Subject: [PATCH] afs: Fix a use after free in afs_xattr_get_acl()
Date: Mon, 24 Aug 2020 08:58:12 +0000	[thread overview]
Message-ID: <20200824085812.GB208317@mwanda> (raw)

The "op" pointer is freed earlier when we call afs_put_operation().

Fixes: e49c7b2f6de7 ("afs: Build an abstraction around an "operation" concept")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 fs/afs/xattr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c
index 84f3c4f57531..38884d6c57cd 100644
--- a/fs/afs/xattr.c
+++ b/fs/afs/xattr.c
@@ -85,7 +85,7 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
 			if (acl->size <= size)
 				memcpy(buffer, acl->data, acl->size);
 			else
-				op->error = -ERANGE;
+				ret = -ERANGE;
 		}
 	}
 
-- 
2.28.0

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: David Howells <dhowells@redhat.com>
Cc: linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org
Subject: [PATCH] afs: Fix a use after free in afs_xattr_get_acl()
Date: Mon, 24 Aug 2020 11:58:12 +0300	[thread overview]
Message-ID: <20200824085812.GB208317@mwanda> (raw)

The "op" pointer is freed earlier when we call afs_put_operation().

Fixes: e49c7b2f6de7 ("afs: Build an abstraction around an "operation" concept")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 fs/afs/xattr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c
index 84f3c4f57531..38884d6c57cd 100644
--- a/fs/afs/xattr.c
+++ b/fs/afs/xattr.c
@@ -85,7 +85,7 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
 			if (acl->size <= size)
 				memcpy(buffer, acl->data, acl->size);
 			else
-				op->error = -ERANGE;
+				ret = -ERANGE;
 		}
 	}
 
-- 
2.28.0


             reply	other threads:[~2020-08-24  8:58 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-24  8:58 Dan Carpenter [this message]
2020-08-24  8:58 ` [PATCH] afs: Fix a use after free in afs_xattr_get_acl() Dan Carpenter

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