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CVE-2022-49754

Description

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.

POC

Reference

No PoCs from references.

Github

- https://github.com/ARPSyndicate/cve-scores