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| author | Vasiliy Kulikov <segoon@openwall.com> | 2011-02-14 13:54:26 +0300 |
|---|---|---|
| committer | Gustavo F. Padovan <padovan@profusion.mobi> | 2011-02-14 17:51:40 +0300 |
| commit | c4c896e1471aec3b004a693c689f60be3b17ac86 (patch) | |
| tree | 7fad770b835cbfe5165fc7027ececc30c165b682 /net/bluetooth | |
| parent | 43629f8f5ea32a998d06d1bb41eefa0e821ff573 (diff) | |
| download | linux-c4c896e1471aec3b004a693c689f60be3b17ac86.tar.xz | |
Bluetooth: sco: fix information leak to userspace
struct sco_conninfo has one padding byte in the end. Local variable
cinfo of type sco_conninfo is copied to userspace with this uninizialized
one byte, leading to old stack contents leak.
Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/sco.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 960c6d1637da..926ed39912ea 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -703,6 +703,7 @@ static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user break; } + memset(&cinfo, 0, sizeof(cinfo)); cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle; memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3); |