summaryrefslogtreecommitdiffstats
path: root/CVE-2019-3459-and-CVE-2019-3460.patch
diff options
context:
space:
mode:
Diffstat (limited to 'CVE-2019-3459-and-CVE-2019-3460.patch')
-rw-r--r--CVE-2019-3459-and-CVE-2019-3460.patch167
1 files changed, 0 insertions, 167 deletions
diff --git a/CVE-2019-3459-and-CVE-2019-3460.patch b/CVE-2019-3459-and-CVE-2019-3460.patch
deleted file mode 100644
index c7fa62736..000000000
--- a/CVE-2019-3459-and-CVE-2019-3460.patch
+++ /dev/null
@@ -1,167 +0,0 @@
-From 20614b74e481f0c9f94032ae99f110d4647b65a6 Mon Sep 17 00:00:00 2001
-From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Date: Thu, 10 Jan 2019 07:28:33 +0100
-Subject: [PATCH 1/2] Bluetooth: check message types in l2cap_get_conf_opt
-
-l2cap_get_conf_opt can handle a "default" message type, but it needs to
-be verified that it really is the correct type (CONF_EFS or CONF_RFC)
-before passing it back to the caller. To do this we need to check the
-return value of this call now and handle the error correctly up the
-stack.
-
-Based on a patch from Ran Menscher.
-
-Reported-by: Ran Menscher <ran.menscher@karambasecurity.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Signed-off-by: Jeremy Cline <jcline@redhat.com>
----
- net/bluetooth/l2cap_core.c | 25 +++++++++++++++++++------
- 1 file changed, 19 insertions(+), 6 deletions(-)
-
-diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
-index d17a4736e47c..a0ce6e8e5ef7 100644
---- a/net/bluetooth/l2cap_core.c
-+++ b/net/bluetooth/l2cap_core.c
-@@ -2979,6 +2979,10 @@ static inline int l2cap_get_conf_opt(void **ptr, int *type, int *olen,
- break;
-
- default:
-+ /* Only CONF_EFS and CONF_RFC are allowed here */
-+ if ((opt->type != L2CAP_CONF_EFS) &&
-+ (opt->type != L2CAP_CONF_RFC))
-+ return -EPROTO;
- *val = (unsigned long) opt->val;
- break;
- }
-@@ -3323,7 +3327,7 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data, size_t data
- void *endptr = data + data_size;
- void *req = chan->conf_req;
- int len = chan->conf_len;
-- int type, hint, olen;
-+ int type, hint, olen, err;
- unsigned long val;
- struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
- struct l2cap_conf_efs efs;
-@@ -3335,7 +3339,10 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data, size_t data
- BT_DBG("chan %p", chan);
-
- while (len >= L2CAP_CONF_OPT_SIZE) {
-- len -= l2cap_get_conf_opt(&req, &type, &olen, &val);
-+ err = l2cap_get_conf_opt(&req, &type, &olen, &val);
-+ if (err < 0)
-+ return err;
-+ len -= err;
-
- hint = type & L2CAP_CONF_HINT;
- type &= L2CAP_CONF_MASK;
-@@ -3538,7 +3545,7 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
- struct l2cap_conf_req *req = data;
- void *ptr = req->data;
- void *endptr = data + size;
-- int type, olen;
-+ int type, olen, err;
- unsigned long val;
- struct l2cap_conf_rfc rfc = { .mode = L2CAP_MODE_BASIC };
- struct l2cap_conf_efs efs;
-@@ -3546,7 +3553,10 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
- BT_DBG("chan %p, rsp %p, len %d, req %p", chan, rsp, len, data);
-
- while (len >= L2CAP_CONF_OPT_SIZE) {
-- len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
-+ err = l2cap_get_conf_opt(&rsp, &type, &olen, &val);
-+ if (err < 0)
-+ return err;
-+ len -= err;
-
- switch (type) {
- case L2CAP_CONF_MTU:
-@@ -3706,7 +3716,7 @@ void __l2cap_connect_rsp_defer(struct l2cap_chan *chan)
-
- static void l2cap_conf_rfc_get(struct l2cap_chan *chan, void *rsp, int len)
- {
-- int type, olen;
-+ int type, olen, err;
- unsigned long val;
- /* Use sane default values in case a misbehaving remote device
- * did not send an RFC or extended window size option.
-@@ -3726,7 +3736,10 @@ static void l2cap_conf_rfc_get(struct l2cap_chan *chan, void *rsp, int len)
- return;
-
- while (len >= L2CAP_CONF_OPT_SIZE) {
-- len -= l2cap_get_conf_opt(&rsp, &type, &olen, &val);
-+ err = l2cap_get_conf_opt(&rsp, &type, &olen, &val);
-+ if (err < 0)
-+ return;
-+ len -= err;
-
- switch (type) {
- case L2CAP_CONF_RFC:
---
-2.20.1
-
-From 50cd5314f5ffa264906f4986f414750d648c4ece Mon Sep 17 00:00:00 2001
-From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Date: Thu, 10 Jan 2019 07:29:17 +0100
-Subject: [PATCH 2/2] Bluetooth: check the buffer size for some messages before
- parsing
-
-The L2CAP_CONF_EFS and L2CAP_CONF_RFC messages can be sent from
-userspace so their structure sizes need to be checked before parsing
-them.
-
-Based on a patch from Ran Menscher.
-
-Reported-by: Ran Menscher <ran.menscher@karambasecurity.com>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Signed-off-by: Jeremy Cline <jcline@redhat.com>
----
- net/bluetooth/l2cap_core.c | 12 ++++++++----
- 1 file changed, 8 insertions(+), 4 deletions(-)
-
-diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
-index a0ce6e8e5ef7..d8d3cbdc0d29 100644
---- a/net/bluetooth/l2cap_core.c
-+++ b/net/bluetooth/l2cap_core.c
-@@ -3360,7 +3360,8 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data, size_t data
- break;
-
- case L2CAP_CONF_RFC:
-- if (olen == sizeof(rfc))
-+ if ((olen == sizeof(rfc)) &&
-+ (endptr - ptr >= L2CAP_CONF_OPT_SIZE + sizeof(rfc)))
- memcpy(&rfc, (void *) val, olen);
- break;
-
-@@ -3370,7 +3371,8 @@ static int l2cap_parse_conf_req(struct l2cap_chan *chan, void *data, size_t data
- break;
-
- case L2CAP_CONF_EFS:
-- if (olen == sizeof(efs)) {
-+ if ((olen == sizeof(efs)) &&
-+ (endptr - ptr >= L2CAP_CONF_OPT_SIZE + sizeof(efs))) {
- remote_efs = 1;
- memcpy(&efs, (void *) val, olen);
- }
-@@ -3575,7 +3577,8 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
- break;
-
- case L2CAP_CONF_RFC:
-- if (olen == sizeof(rfc))
-+ if ((olen == sizeof(rfc)) &&
-+ (endptr - ptr >= L2CAP_CONF_OPT_SIZE + sizeof(rfc)))
- memcpy(&rfc, (void *)val, olen);
-
- if (test_bit(CONF_STATE2_DEVICE, &chan->conf_state) &&
-@@ -3595,7 +3598,8 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
- break;
-
- case L2CAP_CONF_EFS:
-- if (olen == sizeof(efs)) {
-+ if ((olen == sizeof(efs)) &&
-+ (endptr - ptr >= L2CAP_CONF_OPT_SIZE + sizeof(efs))) {
- memcpy(&efs, (void *)val, olen);
-
- if (chan->local_stype != L2CAP_SERV_NOTRAFIC &&
---
-2.20.1
-
generated by cgit (git 2.34.1) at 2024-11-16 10:24:19 +0000