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authorVasiliy Kulikov <segoon@openwall.com>2011-02-14 13:54:31 +0300
committerGustavo F. Padovan <padovan@profusion.mobi>2011-02-14 12:51:33 -0200
commit43629f8f5ea32a998d06d1bb41eefa0e821ff573 (patch)
tree6cc475d80311abf2b06e2b8a2cfd96043192decd /net/bluetooth/bnep
parentd9f51b51db2064c9049bf7924318fd8c6ed852cb (diff)
downloadop-kernel-dev-43629f8f5ea32a998d06d1bb41eefa0e821ff573.zip
op-kernel-dev-43629f8f5ea32a998d06d1bb41eefa0e821ff573.tar.gz
Bluetooth: bnep: fix buffer overflow
Struct ca is copied from userspace. It is not checked whether the "device" field is NULL terminated. This potentially leads to BUG() inside of alloc_netdev_mqs() and/or information leak by creating a device with a name made of contents of kernel stack. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'net/bluetooth/bnep')
-rw-r--r--net/bluetooth/bnep/sock.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c
index 2862f53..d935da7 100644
--- a/net/bluetooth/bnep/sock.c
+++ b/net/bluetooth/bnep/sock.c
@@ -88,6 +88,7 @@ static int bnep_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long
sockfd_put(nsock);
return -EBADFD;
}
+ ca.device[sizeof(ca.device)-1] = 0;
err = bnep_add_connection(&ca, nsock);
if (!err) {
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