Vulnerability Details CVE-2022-49754
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix a buffer overflow in mgmt_mesh_add()
Smatch Warning:
net/bluetooth/mgmt_util.c:375 mgmt_mesh_add() error: __memcpy()
'mesh_tx->param' too small (48 vs 50)
Analysis:
'mesh_tx->param' is array of size 48. This is the destination.
u8 param[sizeof(struct mgmt_cp_mesh_send) + 29]; // 19 + 29 = 48.
But in the caller 'mesh_send' we reject only when len > 50.
len > (MGMT_MESH_SEND_SIZE + 31) // 19 + 31 = 50.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.0%
CVSS Severity
CVSS v3 Score 7.8
References
Products affected by CVE-2022-49754
-
cpe:2.3:o:linux:linux_kernel:6.1
-
cpe:2.3:o:linux:linux_kernel:6.1.1
-
cpe:2.3:o:linux:linux_kernel:6.1.2
-
cpe:2.3:o:linux:linux_kernel:6.1.3
-
cpe:2.3:o:linux:linux_kernel:6.1.4
-
cpe:2.3:o:linux:linux_kernel:6.1.5
-
cpe:2.3:o:linux:linux_kernel:6.1.6
-
cpe:2.3:o:linux:linux_kernel:6.1.7
-
cpe:2.3:o:linux:linux_kernel:6.1.8
-
cpe:2.3:o:linux:linux_kernel:6.2