Description
In the Linux kernel, the following vulnerability has been resolved: accel/qaic: tighten bounds checking in decode_message() Copy the bounds checking from encode_message() to decode_message(). This patch addresses the following concerns. Ensure that there is enough space for at least one header so that we don't have a negative size later. if (msg_hdr_len < sizeof(*trans_hdr)) Ensure that we have enough space to read the next header from the msg->data. if (msg_len > msg_hdr_len - sizeof(*trans_hdr)) return -EINVAL; Check that the trans_hdr->len is not below the minimum size: if (hdr_len < sizeof(*trans_hdr)) This minimum check ensures that we don't corrupt memory in decode_passthrough() when we do. memcpy(out_trans->data, in_trans->data, len - sizeof(in_trans->hdr)); And finally, use size_add() to prevent an integer overflow: if (size_add(msg_len, hdr_len) > msg_hdr_len)
Product status
129776ac2e38231fa9c02ce20e116c99de291666 before 57d14cb3bae4619ce2fb5235cb318c3d5d8f53fd
129776ac2e38231fa9c02ce20e116c99de291666 before 51b56382ed2a2b03347372272362b3baa623ed1e
6.4
Any version before 6.4
6.4.7
6.5
References
git.kernel.org/...c/57d14cb3bae4619ce2fb5235cb318c3d5d8f53fd
git.kernel.org/...c/51b56382ed2a2b03347372272362b3baa623ed1e
